Home / 778,830.40-1,167,439.20-423,092.80

Finding the Fourth Proportional to 778,830.40, 1,167,439.20 and 423,092.80

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Solution

The fourth proportional to 778,830.40, 1,167,439.20 and 423,092.80 is: 634,201.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,830.40 : 1,167,439.20 = 423,092.80 : x
  2. Step 2: Convert to fraction form
    778,830.40/1,167,439.20 = 423,092.80/x
  3. Step 3: Cross multiply
    778,830.40x = 1,167,439.20 × 423,092.80
  4. Step 4: Simplify right side
    778,830.40x = 493,935,119,957.76
  5. Step 5: Solve for x
    x = 493,935,119,957.76/778,830.40
  6. Step 6: Final answer
    x = 634,201.13

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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.