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Finding the Fourth Proportional to 492,444.60, 680,721.30 and 439,256.76

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Solution

The fourth proportional to 492,444.60, 680,721.30 and 439,256.76 is: 607,198.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,444.60 : 680,721.30 = 439,256.76 : x
  2. Step 2: Convert to fraction form
    492,444.60/680,721.30 = 439,256.76/x
  3. Step 3: Cross multiply
    492,444.60x = 680,721.30 × 439,256.76
  4. Step 4: Simplify right side
    492,444.60x = 299,011,432,700.99
  5. Step 5: Solve for x
    x = 299,011,432,700.99/492,444.60
  6. Step 6: Final answer
    x = 607,198.11

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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.