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Finding the Fourth Proportional to 563,649.75, 777,836.70 and 309,002.76

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Solution

The fourth proportional to 563,649.75, 777,836.70 and 309,002.76 is: 426,423.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,649.75 : 777,836.70 = 309,002.76 : x
  2. Step 2: Convert to fraction form
    563,649.75/777,836.70 = 309,002.76/x
  3. Step 3: Cross multiply
    563,649.75x = 777,836.70 × 309,002.76
  4. Step 4: Simplify right side
    563,649.75x = 240,353,687,129.29
  5. Step 5: Solve for x
    x = 240,353,687,129.29/563,649.75
  6. Step 6: Final answer
    x = 426,423.83

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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.