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Finding the Fourth Proportional to 802,978.48, 1,108,141.36 and 440,417.62

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Solution

The fourth proportional to 802,978.48, 1,108,141.36 and 440,417.62 is: 607,793.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,978.48 : 1,108,141.36 = 440,417.62 : x
  2. Step 2: Convert to fraction form
    802,978.48/1,108,141.36 = 440,417.62/x
  3. Step 3: Cross multiply
    802,978.48x = 1,108,141.36 × 440,417.62
  4. Step 4: Simplify right side
    802,978.48x = 488,044,980,678.90
  5. Step 5: Solve for x
    x = 488,044,980,678.90/802,978.48
  6. Step 6: Final answer
    x = 607,793.35

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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.