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Finding the Fourth Proportional to 710,859.20, 1,064,215.20 and 636,209.60

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Solution

The fourth proportional to 710,859.20, 1,064,215.20 and 636,209.60 is: 952,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,859.20 : 1,064,215.20 = 636,209.60 : x
  2. Step 2: Convert to fraction form
    710,859.20/1,064,215.20 = 636,209.60/x
  3. Step 3: Cross multiply
    710,859.20x = 1,064,215.20 × 636,209.60
  4. Step 4: Simplify right side
    710,859.20x = 677,063,926,705.92
  5. Step 5: Solve for x
    x = 677,063,926,705.92/710,859.20
  6. Step 6: Final answer
    x = 952,458.56

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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.