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Finding the Fourth Proportional to 515,451.80, 712,004.82 and 429,690.92

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Solution

The fourth proportional to 515,451.80, 712,004.82 and 429,690.92 is: 593,541.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,451.80 : 712,004.82 = 429,690.92 : x
  2. Step 2: Convert to fraction form
    515,451.80/712,004.82 = 429,690.92/x
  3. Step 3: Cross multiply
    515,451.80x = 712,004.82 × 429,690.92
  4. Step 4: Simplify right side
    515,451.80x = 305,942,006,150.23
  5. Step 5: Solve for x
    x = 305,942,006,150.23/515,451.80
  6. Step 6: Final answer
    x = 593,541.44

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1.5x scale

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.