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Finding the Fourth Proportional to 480,342.46, 662,964 and 316,711.12

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Solution

The fourth proportional to 480,342.46, 662,964 and 316,711.12 is: 437,121.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,342.46 : 662,964 = 316,711.12 : x
  2. Step 2: Convert to fraction form
    480,342.46/662,964 = 316,711.12/x
  3. Step 3: Cross multiply
    480,342.46x = 662,964 × 316,711.12
  4. Step 4: Simplify right side
    480,342.46x = 209,968,070,959.68
  5. Step 5: Solve for x
    x = 209,968,070,959.68/480,342.46
  6. Step 6: Final answer
    x = 437,121.61

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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.