Home / 778,109.60-1,165,283.40-644,002.76

Finding the Fourth Proportional to 778,109.60, 1,165,283.40 and 644,002.76

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Solution

The fourth proportional to 778,109.60, 1,165,283.40 and 644,002.76 is: 964,447.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,109.60 : 1,165,283.40 = 644,002.76 : x
  2. Step 2: Convert to fraction form
    778,109.60/1,165,283.40 = 644,002.76/x
  3. Step 3: Cross multiply
    778,109.60x = 1,165,283.40 × 644,002.76
  4. Step 4: Simplify right side
    778,109.60x = 750,445,725,782.18
  5. Step 5: Solve for x
    x = 750,445,725,782.18/778,109.60
  6. Step 6: Final answer
    x = 964,447.33

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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.