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Finding the Fourth Proportional to 535,129.40, 802,694.10 and 486,140.60

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Solution

The fourth proportional to 535,129.40, 802,694.10 and 486,140.60 is: 729,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,129.40 : 802,694.10 = 486,140.60 : x
  2. Step 2: Convert to fraction form
    535,129.40/802,694.10 = 486,140.60/x
  3. Step 3: Cross multiply
    535,129.40x = 802,694.10 × 486,140.60
  4. Step 4: Simplify right side
    535,129.40x = 390,222,191,390.46
  5. Step 5: Solve for x
    x = 390,222,191,390.46/535,129.40
  6. Step 6: Final answer
    x = 729,210.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.