Home / 880,130.20-1,321,070.10-431,357.80

Finding the Fourth Proportional to 880,130.20, 1,321,070.10 and 431,357.80

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Solution

The fourth proportional to 880,130.20, 1,321,070.10 and 431,357.80 is: 647,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,130.20 : 1,321,070.10 = 431,357.80 : x
  2. Step 2: Convert to fraction form
    880,130.20/1,321,070.10 = 431,357.80/x
  3. Step 3: Cross multiply
    880,130.20x = 1,321,070.10 × 431,357.80
  4. Step 4: Simplify right side
    880,130.20x = 569,853,891,981.78
  5. Step 5: Solve for x
    x = 569,853,891,981.78/880,130.20
  6. Step 6: Final answer
    x = 647,465.45

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Double scale
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1.5x scale

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.