Home / 663,787.68-916,025.28-361,981.76

Finding the Fourth Proportional to 663,787.68, 916,025.28 and 361,981.76

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Solution

The fourth proportional to 663,787.68, 916,025.28 and 361,981.76 is: 499,533.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,787.68 : 916,025.28 = 361,981.76 : x
  2. Step 2: Convert to fraction form
    663,787.68/916,025.28 = 361,981.76/x
  3. Step 3: Cross multiply
    663,787.68x = 916,025.28 × 361,981.76
  4. Step 4: Simplify right side
    663,787.68x = 331,584,443,058.89
  5. Step 5: Solve for x
    x = 331,584,443,058.89/663,787.68
  6. Step 6: Final answer
    x = 499,533.89

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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.