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Finding the Fourth Proportional to 1,220,521, 1,830,781.52 and 472,567

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Solution

The fourth proportional to 1,220,521, 1,830,781.52 and 472,567 is: 708,850.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,521 : 1,830,781.52 = 472,567 : x
  2. Step 2: Convert to fraction form
    1,220,521/1,830,781.52 = 472,567/x
  3. Step 3: Cross multiply
    1,220,521x = 1,830,781.52 × 472,567
  4. Step 4: Simplify right side
    1,220,521x = 865,166,930,561.84
  5. Step 5: Solve for x
    x = 865,166,930,561.84/1,220,521
  6. Step 6: Final answer
    x = 708,850.51

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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.