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Finding the Fourth Proportional to 531,010.80, 732,460.14 and 315,990.36

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Solution

The fourth proportional to 531,010.80, 732,460.14 and 315,990.36 is: 435,867.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,010.80 : 732,460.14 = 315,990.36 : x
  2. Step 2: Convert to fraction form
    531,010.80/732,460.14 = 315,990.36/x
  3. Step 3: Cross multiply
    531,010.80x = 732,460.14 × 315,990.36
  4. Step 4: Simplify right side
    531,010.80x = 231,450,343,324.25
  5. Step 5: Solve for x
    x = 231,450,343,324.25/531,010.80
  6. Step 6: Final answer
    x = 435,867.49

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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.