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Finding the Fourth Proportional to 602,959.20, 905,475.60 and 426,703.20

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Solution

The fourth proportional to 602,959.20, 905,475.60 and 426,703.20 is: 640,788.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,959.20 : 905,475.60 = 426,703.20 : x
  2. Step 2: Convert to fraction form
    602,959.20/905,475.60 = 426,703.20/x
  3. Step 3: Cross multiply
    602,959.20x = 905,475.60 × 426,703.20
  4. Step 4: Simplify right side
    602,959.20x = 386,369,336,041.92
  5. Step 5: Solve for x
    x = 386,369,336,041.92/602,959.20
  6. Step 6: Final answer
    x = 640,788.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.