Home / 728,817.06-1,005,812.60-402,128.48

Finding the Fourth Proportional to 728,817.06, 1,005,812.60 and 402,128.48

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Solution

The fourth proportional to 728,817.06, 1,005,812.60 and 402,128.48 is: 554,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,817.06 : 1,005,812.60 = 402,128.48 : x
  2. Step 2: Convert to fraction form
    728,817.06/1,005,812.60 = 402,128.48/x
  3. Step 3: Cross multiply
    728,817.06x = 1,005,812.60 × 402,128.48
  4. Step 4: Simplify right side
    728,817.06x = 404,465,884,963.14
  5. Step 5: Solve for x
    x = 404,465,884,963.14/728,817.06
  6. Step 6: Final answer
    x = 554,962.15

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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.