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Finding the Fourth Proportional to 655,883.68, 905,019.60 and 369,385.60

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Solution

The fourth proportional to 655,883.68, 905,019.60 and 369,385.60 is: 509,695.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,883.68 : 905,019.60 = 369,385.60 : x
  2. Step 2: Convert to fraction form
    655,883.68/905,019.60 = 369,385.60/x
  3. Step 3: Cross multiply
    655,883.68x = 905,019.60 × 369,385.60
  4. Step 4: Simplify right side
    655,883.68x = 334,301,207,957.76
  5. Step 5: Solve for x
    x = 334,301,207,957.76/655,883.68
  6. Step 6: Final answer
    x = 509,695.88

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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.