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Finding the Fourth Proportional to 578,020.20, 867,030.30 and 472,957.80

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Solution

The fourth proportional to 578,020.20, 867,030.30 and 472,957.80 is: 709,436.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,020.20 : 867,030.30 = 472,957.80 : x
  2. Step 2: Convert to fraction form
    578,020.20/867,030.30 = 472,957.80/x
  3. Step 3: Cross multiply
    578,020.20x = 867,030.30 × 472,957.80
  4. Step 4: Simplify right side
    578,020.20x = 410,068,743,221.34
  5. Step 5: Solve for x
    x = 410,068,743,221.34/578,020.20
  6. Step 6: Final answer
    x = 709,436.70

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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.