Home / 728,823.38-1,005,713.21-470,711.60

Finding the Fourth Proportional to 728,823.38, 1,005,713.21 and 470,711.60

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Solution

The fourth proportional to 728,823.38, 1,005,713.21 and 470,711.60 is: 649,541.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,823.38 : 1,005,713.21 = 470,711.60 : x
  2. Step 2: Convert to fraction form
    728,823.38/1,005,713.21 = 470,711.60/x
  3. Step 3: Cross multiply
    728,823.38x = 1,005,713.21 × 470,711.60
  4. Step 4: Simplify right side
    728,823.38x = 473,400,866,838.11
  5. Step 5: Solve for x
    x = 473,400,866,838.11/728,823.38
  6. Step 6: Final answer
    x = 649,541.28

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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.