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Finding the Fourth Proportional to 654,759.76, 903,577.80 and 386,487.76

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Solution

The fourth proportional to 654,759.76, 903,577.80 and 386,487.76 is: 533,358.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,759.76 : 903,577.80 = 386,487.76 : x
  2. Step 2: Convert to fraction form
    654,759.76/903,577.80 = 386,487.76/x
  3. Step 3: Cross multiply
    654,759.76x = 903,577.80 × 386,487.76
  4. Step 4: Simplify right side
    654,759.76x = 349,221,759,907.73
  5. Step 5: Solve for x
    x = 349,221,759,907.73/654,759.76
  6. Step 6: Final answer
    x = 533,358.62

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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.