Home / 992,631.12-1,488,220.79-318,328.61

Finding the Fourth Proportional to 992,631.12, 1,488,220.79 and 318,328.61

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Solution

The fourth proportional to 992,631.12, 1,488,220.79 and 318,328.61 is: 477,260.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,631.12 : 1,488,220.79 = 318,328.61 : x
  2. Step 2: Convert to fraction form
    992,631.12/1,488,220.79 = 318,328.61/x
  3. Step 3: Cross multiply
    992,631.12x = 1,488,220.79 × 318,328.61
  4. Step 4: Simplify right side
    992,631.12x = 473,743,246,421.06
  5. Step 5: Solve for x
    x = 473,743,246,421.06/992,631.12
  6. Step 6: Final answer
    x = 477,260.12

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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.