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Finding the Fourth Proportional to 665,496, 918,332.16 and 378,959.04

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Solution

The fourth proportional to 665,496, 918,332.16 and 378,959.04 is: 522,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,496 : 918,332.16 = 378,959.04 : x
  2. Step 2: Convert to fraction form
    665,496/918,332.16 = 378,959.04/x
  3. Step 3: Cross multiply
    665,496x = 918,332.16 × 378,959.04
  4. Step 4: Simplify right side
    665,496x = 348,010,273,754.73
  5. Step 5: Solve for x
    x = 348,010,273,754.73/665,496
  6. Step 6: Final answer
    x = 522,933.68

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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.