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Finding the Fourth Proportional to 661,459.77, 912,941.25 and 374,980.98

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Solution

The fourth proportional to 661,459.77, 912,941.25 and 374,980.98 is: 517,545.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,459.77 : 912,941.25 = 374,980.98 : x
  2. Step 2: Convert to fraction form
    661,459.77/912,941.25 = 374,980.98/x
  3. Step 3: Cross multiply
    661,459.77x = 912,941.25 × 374,980.98
  4. Step 4: Simplify right side
    661,459.77x = 342,335,604,607.43
  5. Step 5: Solve for x
    x = 342,335,604,607.43/661,459.77
  6. Step 6: Final answer
    x = 517,545.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.