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Finding the Fourth Proportional to 563,657.50, 777,845.70 and 309,008.88

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Solution

The fourth proportional to 563,657.50, 777,845.70 and 309,008.88 is: 426,431.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,657.50 : 777,845.70 = 309,008.88 : x
  2. Step 2: Convert to fraction form
    563,657.50/777,845.70 = 309,008.88/x
  3. Step 3: Cross multiply
    563,657.50x = 777,845.70 × 309,008.88
  4. Step 4: Simplify right side
    563,657.50x = 240,361,228,569.82
  5. Step 5: Solve for x
    x = 240,361,228,569.82/563,657.50
  6. Step 6: Final answer
    x = 426,431.35

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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.