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Finding the Fourth Proportional to 629,348.40, 868,498.20 and 342,867.60

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Solution

The fourth proportional to 629,348.40, 868,498.20 and 342,867.60 is: 473,155.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,348.40 : 868,498.20 = 342,867.60 : x
  2. Step 2: Convert to fraction form
    629,348.40/868,498.20 = 342,867.60/x
  3. Step 3: Cross multiply
    629,348.40x = 868,498.20 × 342,867.60
  4. Step 4: Simplify right side
    629,348.40x = 297,779,893,438.32
  5. Step 5: Solve for x
    x = 297,779,893,438.32/629,348.40
  6. Step 6: Final answer
    x = 473,155.88

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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.