Home / 721,012.89-1,076,815.92-613,248.47

Finding the Fourth Proportional to 721,012.89, 1,076,815.92 and 613,248.47

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Solution

The fourth proportional to 721,012.89, 1,076,815.92 and 613,248.47 is: 915,872.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,012.89 : 1,076,815.92 = 613,248.47 : x
  2. Step 2: Convert to fraction form
    721,012.89/1,076,815.92 = 613,248.47/x
  3. Step 3: Cross multiply
    721,012.89x = 1,076,815.92 × 613,248.47
  4. Step 4: Simplify right side
    721,012.89x = 660,355,716,365.30
  5. Step 5: Solve for x
    x = 660,355,716,365.30/721,012.89
  6. Step 6: Final answer
    x = 915,872.27

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.