Home / 992,493.80-1,488,740.70-361,428.20

Finding the Fourth Proportional to 992,493.80, 1,488,740.70 and 361,428.20

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Solution

The fourth proportional to 992,493.80, 1,488,740.70 and 361,428.20 is: 542,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,493.80 : 1,488,740.70 = 361,428.20 : x
  2. Step 2: Convert to fraction form
    992,493.80/1,488,740.70 = 361,428.20/x
  3. Step 3: Cross multiply
    992,493.80x = 1,488,740.70 × 361,428.20
  4. Step 4: Simplify right side
    992,493.80x = 538,072,871,467.74
  5. Step 5: Solve for x
    x = 538,072,871,467.74/992,493.80
  6. Step 6: Final answer
    x = 542,142.30

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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.