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Finding the Fourth Proportional to 666,001.70, 999,002.55 and 414,059.30

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Solution

The fourth proportional to 666,001.70, 999,002.55 and 414,059.30 is: 621,088.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,001.70 : 999,002.55 = 414,059.30 : x
  2. Step 2: Convert to fraction form
    666,001.70/999,002.55 = 414,059.30/x
  3. Step 3: Cross multiply
    666,001.70x = 999,002.55 × 414,059.30
  4. Step 4: Simplify right side
    666,001.70x = 413,646,296,551.22
  5. Step 5: Solve for x
    x = 413,646,296,551.22/666,001.70
  6. Step 6: Final answer
    x = 621,088.95

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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.