Home / 1,138,114.80-1,707,269.40-390,160.80

Finding the Fourth Proportional to 1,138,114.80, 1,707,269.40 and 390,160.80

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Solution

The fourth proportional to 1,138,114.80, 1,707,269.40 and 390,160.80 is: 585,274.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,114.80 : 1,707,269.40 = 390,160.80 : x
  2. Step 2: Convert to fraction form
    1,138,114.80/1,707,269.40 = 390,160.80/x
  3. Step 3: Cross multiply
    1,138,114.80x = 1,707,269.40 × 390,160.80
  4. Step 4: Simplify right side
    1,138,114.80x = 666,109,594,919.52
  5. Step 5: Solve for x
    x = 666,109,594,919.52/1,138,114.80
  6. Step 6: Final answer
    x = 585,274.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.