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Finding the Fourth Proportional to 563,402.71, 777,570.20 and 321,630.67

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Solution

The fourth proportional to 563,402.71, 777,570.20 and 321,630.67 is: 443,892.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,402.71 : 777,570.20 = 321,630.67 : x
  2. Step 2: Convert to fraction form
    563,402.71/777,570.20 = 321,630.67/x
  3. Step 3: Cross multiply
    563,402.71x = 777,570.20 × 321,630.67
  4. Step 4: Simplify right side
    563,402.71x = 250,090,424,398.03
  5. Step 5: Solve for x
    x = 250,090,424,398.03/563,402.71
  6. Step 6: Final answer
    x = 443,892.83

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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.