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Finding the Fourth Proportional to 567,275.76, 782,830.08 and 309,154.77

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Solution

The fourth proportional to 567,275.76, 782,830.08 and 309,154.77 is: 426,627.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,275.76 : 782,830.08 = 309,154.77 : x
  2. Step 2: Convert to fraction form
    567,275.76/782,830.08 = 309,154.77/x
  3. Step 3: Cross multiply
    567,275.76x = 782,830.08 × 309,154.77
  4. Step 4: Simplify right side
    567,275.76x = 242,015,653,331.48
  5. Step 5: Solve for x
    x = 242,015,653,331.48/567,275.76
  6. Step 6: Final answer
    x = 426,627.88

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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.