Home / 1,280,452,012.48-1,766,482,689.12-857,202,030.48

Finding the Fourth Proportional to 1,280,452,012.48, 1,766,482,689.12 and 857,202,030.48

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Solution

The fourth proportional to 1,280,452,012.48, 1,766,482,689.12 and 857,202,030.48 is: 1,182,576,569.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,452,012.48 : 1,766,482,689.12 = 857,202,030.48 : x
  2. Step 2: Convert to fraction form
    1,280,452,012.48/1,766,482,689.12 = 857,202,030.48/x
  3. Step 3: Cross multiply
    1,280,452,012.48x = 1,766,482,689.12 × 857,202,030.48
  4. Step 4: Simplify right side
    1,280,452,012.48x = 1,514,232,547,921,434,624
  5. Step 5: Solve for x
    x = 1,514,232,547,921,434,624/1,280,452,012.48
  6. Step 6: Final answer
    x = 1,182,576,569.18

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Double scale
Find fourth proportional to 1,280,452,013.48, 1,766,482,690.50 and 857,202,031.48
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.