Home / 739,180.68-1,020,068.47-399,648.12

Finding the Fourth Proportional to 739,180.68, 1,020,068.47 and 399,648.12

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Solution

The fourth proportional to 739,180.68, 1,020,068.47 and 399,648.12 is: 551,513.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,180.68 : 1,020,068.47 = 399,648.12 : x
  2. Step 2: Convert to fraction form
    739,180.68/1,020,068.47 = 399,648.12/x
  3. Step 3: Cross multiply
    739,180.68x = 1,020,068.47 × 399,648.12
  4. Step 4: Simplify right side
    739,180.68x = 407,668,446,306.78
  5. Step 5: Solve for x
    x = 407,668,446,306.78/739,180.68
  6. Step 6: Final answer
    x = 551,513.94

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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.