Home / 778,151.04-1,074,015.36-491,488.80

Finding the Fourth Proportional to 778,151.04, 1,074,015.36 and 491,488.80

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Solution

The fourth proportional to 778,151.04, 1,074,015.36 and 491,488.80 is: 678,359.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,151.04 : 1,074,015.36 = 491,488.80 : x
  2. Step 2: Convert to fraction form
    778,151.04/1,074,015.36 = 491,488.80/x
  3. Step 3: Cross multiply
    778,151.04x = 1,074,015.36 × 491,488.80
  4. Step 4: Simplify right side
    778,151.04x = 527,866,520,467.97
  5. Step 5: Solve for x
    x = 527,866,520,467.97/778,151.04
  6. Step 6: Final answer
    x = 678,359.98

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Double scale
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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.