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Finding the Fourth Proportional to 607,647.98, 911,666.70 and 425,468.57

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Solution

The fourth proportional to 607,647.98, 911,666.70 and 425,468.57 is: 638,339.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,647.98 : 911,666.70 = 425,468.57 : x
  2. Step 2: Convert to fraction form
    607,647.98/911,666.70 = 425,468.57/x
  3. Step 3: Cross multiply
    607,647.98x = 911,666.70 × 425,468.57
  4. Step 4: Simplify right side
    607,647.98x = 387,885,522,607.29
  5. Step 5: Solve for x
    x = 387,885,522,607.29/607,647.98
  6. Step 6: Final answer
    x = 638,339.19

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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.