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Finding the Fourth Proportional to 526,479.84, 726,542.32 and 297,085.76

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Solution

The fourth proportional to 526,479.84, 726,542.32 and 297,085.76 is: 409,978.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,479.84 : 726,542.32 = 297,085.76 : x
  2. Step 2: Convert to fraction form
    526,479.84/726,542.32 = 297,085.76/x
  3. Step 3: Cross multiply
    526,479.84x = 726,542.32 × 297,085.76
  4. Step 4: Simplify right side
    526,479.84x = 215,845,377,309.36
  5. Step 5: Solve for x
    x = 215,845,377,309.36/526,479.84
  6. Step 6: Final answer
    x = 409,978.43

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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.