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Finding the Fourth Proportional to 661,269.60, 912,561.12 and 359,470.08

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Solution

The fourth proportional to 661,269.60, 912,561.12 and 359,470.08 is: 496,073.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,269.60 : 912,561.12 = 359,470.08 : x
  2. Step 2: Convert to fraction form
    661,269.60/912,561.12 = 359,470.08/x
  3. Step 3: Cross multiply
    661,269.60x = 912,561.12 × 359,470.08
  4. Step 4: Simplify right side
    661,269.60x = 328,038,418,811.29
  5. Step 5: Solve for x
    x = 328,038,418,811.29/661,269.60
  6. Step 6: Final answer
    x = 496,073.64

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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.