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Finding the Fourth Proportional to 478,564.32, 660,418.80 and 277,476.96

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Solution

The fourth proportional to 478,564.32, 660,418.80 and 277,476.96 is: 382,918.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,564.32 : 660,418.80 = 277,476.96 : x
  2. Step 2: Convert to fraction form
    478,564.32/660,418.80 = 277,476.96/x
  3. Step 3: Cross multiply
    478,564.32x = 660,418.80 × 277,476.96
  4. Step 4: Simplify right side
    478,564.32x = 183,251,000,950.85
  5. Step 5: Solve for x
    x = 183,251,000,950.85/478,564.32
  6. Step 6: Final answer
    x = 382,918.23

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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.