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Finding the Fourth Proportional to 554,277.52, 764,897.32 and 309,264.40

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Solution

The fourth proportional to 554,277.52, 764,897.32 and 309,264.40 is: 426,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,277.52 : 764,897.32 = 309,264.40 : x
  2. Step 2: Convert to fraction form
    554,277.52/764,897.32 = 309,264.40/x
  3. Step 3: Cross multiply
    554,277.52x = 764,897.32 × 309,264.40
  4. Step 4: Simplify right side
    554,277.52x = 236,555,510,731.41
  5. Step 5: Solve for x
    x = 236,555,510,731.41/554,277.52
  6. Step 6: Final answer
    x = 426,781.72

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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.