Home / 639,815.52-959,920.16-462,384.32

Finding the Fourth Proportional to 639,815.52, 959,920.16 and 462,384.32

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Solution

The fourth proportional to 639,815.52, 959,920.16 and 462,384.32 is: 693,718.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,815.52 : 959,920.16 = 462,384.32 : x
  2. Step 2: Convert to fraction form
    639,815.52/959,920.16 = 462,384.32/x
  3. Step 3: Cross multiply
    639,815.52x = 959,920.16 × 462,384.32
  4. Step 4: Simplify right side
    639,815.52x = 443,852,030,435.89
  5. Step 5: Solve for x
    x = 443,852,030,435.89/639,815.52
  6. Step 6: Final answer
    x = 693,718.76

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.