Home / 778,108.60-1,165,281.90-644,001.76

Finding the Fourth Proportional to 778,108.60, 1,165,281.90 and 644,001.76

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Solution

The fourth proportional to 778,108.60, 1,165,281.90 and 644,001.76 is: 964,445.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,108.60 : 1,165,281.90 = 644,001.76 : x
  2. Step 2: Convert to fraction form
    778,108.60/1,165,281.90 = 644,001.76/x
  3. Step 3: Cross multiply
    778,108.60x = 1,165,281.90 × 644,001.76
  4. Step 4: Simplify right side
    778,108.60x = 750,443,594,496.14
  5. Step 5: Solve for x
    x = 750,443,594,496.14/778,108.60
  6. Step 6: Final answer
    x = 964,445.83

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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.