Home / 805,231,510.80-1,111,196,975.88-487,879,649.29

Finding the Fourth Proportional to 805,231,510.80, 1,111,196,975.88 and 487,879,649.29

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Solution

The fourth proportional to 805,231,510.80, 1,111,196,975.88 and 487,879,649.29 is: 673,260,278.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,231,510.80 : 1,111,196,975.88 = 487,879,649.29 : x
  2. Step 2: Convert to fraction form
    805,231,510.80/1,111,196,975.88 = 487,879,649.29/x
  3. Step 3: Cross multiply
    805,231,510.80x = 1,111,196,975.88 × 487,879,649.29
  4. Step 4: Simplify right side
    805,231,510.80x = 542,130,390,884,443,072
  5. Step 5: Solve for x
    x = 542,130,390,884,443,072/805,231,510.80
  6. Step 6: Final answer
    x = 673,260,278.09

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Double scale
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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.