Home / 992,118.70-1,488,144.84-431,153.20

Finding the Fourth Proportional to 992,118.70, 1,488,144.84 and 431,153.20

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Solution

The fourth proportional to 992,118.70, 1,488,144.84 and 431,153.20 is: 646,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,118.70 : 1,488,144.84 = 431,153.20 : x
  2. Step 2: Convert to fraction form
    992,118.70/1,488,144.84 = 431,153.20/x
  3. Step 3: Cross multiply
    992,118.70x = 1,488,144.84 × 431,153.20
  4. Step 4: Simplify right side
    992,118.70x = 641,618,409,829.49
  5. Step 5: Solve for x
    x = 641,618,409,829.49/992,118.70
  6. Step 6: Final answer
    x = 646,715.37

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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.