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Finding the Fourth Proportional to 666,562.47, 999,532.67 and 386,159.91

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Solution

The fourth proportional to 666,562.47, 999,532.67 and 386,159.91 is: 579,059.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,562.47 : 999,532.67 = 386,159.91 : x
  2. Step 2: Convert to fraction form
    666,562.47/999,532.67 = 386,159.91/x
  3. Step 3: Cross multiply
    666,562.47x = 999,532.67 × 386,159.91
  4. Step 4: Simplify right side
    666,562.47x = 385,979,443,958.46
  5. Step 5: Solve for x
    x = 385,979,443,958.46/666,562.47
  6. Step 6: Final answer
    x = 579,059.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.