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Finding the Fourth Proportional to 666,501.52, 919,726.44 and 380,033.68

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Solution

The fourth proportional to 666,501.52, 919,726.44 and 380,033.68 is: 524,420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,501.52 : 919,726.44 = 380,033.68 : x
  2. Step 2: Convert to fraction form
    666,501.52/919,726.44 = 380,033.68/x
  3. Step 3: Cross multiply
    666,501.52x = 919,726.44 × 380,033.68
  4. Step 4: Simplify right side
    666,501.52x = 349,527,023,586.50
  5. Step 5: Solve for x
    x = 349,527,023,586.50/666,501.52
  6. Step 6: Final answer
    x = 524,420.44

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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.