Home / 992,486.40-1,488,000.60-393,151.20

Finding the Fourth Proportional to 992,486.40, 1,488,000.60 and 393,151.20

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Solution

The fourth proportional to 992,486.40, 1,488,000.60 and 393,151.20 is: 589,438.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,486.40 : 1,488,000.60 = 393,151.20 : x
  2. Step 2: Convert to fraction form
    992,486.40/1,488,000.60 = 393,151.20/x
  3. Step 3: Cross multiply
    992,486.40x = 1,488,000.60 × 393,151.20
  4. Step 4: Simplify right side
    992,486.40x = 585,009,221,490.72
  5. Step 5: Solve for x
    x = 585,009,221,490.72/992,486.40
  6. Step 6: Final answer
    x = 589,438.02

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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.