Home / 775,800.29-1,070,355.20-469,778.85

Finding the Fourth Proportional to 775,800.29, 1,070,355.20 and 469,778.85

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Solution

The fourth proportional to 775,800.29, 1,070,355.20 and 469,778.85 is: 648,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,800.29 : 1,070,355.20 = 469,778.85 : x
  2. Step 2: Convert to fraction form
    775,800.29/1,070,355.20 = 469,778.85/x
  3. Step 3: Cross multiply
    775,800.29x = 1,070,355.20 × 469,778.85
  4. Step 4: Simplify right side
    775,800.29x = 502,830,232,598.63
  5. Step 5: Solve for x
    x = 502,830,232,598.63/775,800.29
  6. Step 6: Final answer
    x = 648,143.91

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1.5x scale

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.