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Finding the Fourth Proportional to 429,572.57, 641,218.48 and 398,349.50

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Solution

The fourth proportional to 429,572.57, 641,218.48 and 398,349.50 is: 594,612.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,572.57 : 641,218.48 = 398,349.50 : x
  2. Step 2: Convert to fraction form
    429,572.57/641,218.48 = 398,349.50/x
  3. Step 3: Cross multiply
    429,572.57x = 641,218.48 × 398,349.50
  4. Step 4: Simplify right side
    429,572.57x = 255,429,056,696.79
  5. Step 5: Solve for x
    x = 255,429,056,696.79/429,572.57
  6. Step 6: Final answer
    x = 594,612.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.