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Finding the Fourth Proportional to 607,200.90, 910,801.35 and 429,908.10

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Solution

The fourth proportional to 607,200.90, 910,801.35 and 429,908.10 is: 644,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,200.90 : 910,801.35 = 429,908.10 : x
  2. Step 2: Convert to fraction form
    607,200.90/910,801.35 = 429,908.10/x
  3. Step 3: Cross multiply
    607,200.90x = 910,801.35 × 429,908.10
  4. Step 4: Simplify right side
    607,200.90x = 391,560,877,855.94
  5. Step 5: Solve for x
    x = 391,560,877,855.94/607,200.90
  6. Step 6: Final answer
    x = 644,862.15

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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.