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Finding the Fourth Proportional to 472,885.80, 709,328.70 and 429,340.20

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Solution

The fourth proportional to 472,885.80, 709,328.70 and 429,340.20 is: 644,010.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,885.80 : 709,328.70 = 429,340.20 : x
  2. Step 2: Convert to fraction form
    472,885.80/709,328.70 = 429,340.20/x
  3. Step 3: Cross multiply
    472,885.80x = 709,328.70 × 429,340.20
  4. Step 4: Simplify right side
    472,885.80x = 304,543,325,923.74
  5. Step 5: Solve for x
    x = 304,543,325,923.74/472,885.80
  6. Step 6: Final answer
    x = 644,010.30

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Similar ratio
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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.