Home / 900,615.52-1,242,839.96-492,713.20

Finding the Fourth Proportional to 900,615.52, 1,242,839.96 and 492,713.20

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Solution

The fourth proportional to 900,615.52, 1,242,839.96 and 492,713.20 is: 679,939.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,615.52 : 1,242,839.96 = 492,713.20 : x
  2. Step 2: Convert to fraction form
    900,615.52/1,242,839.96 = 492,713.20/x
  3. Step 3: Cross multiply
    900,615.52x = 1,242,839.96 × 492,713.20
  4. Step 4: Simplify right side
    900,615.52x = 612,363,653,779.47
  5. Step 5: Solve for x
    x = 612,363,653,779.47/900,615.52
  6. Step 6: Final answer
    x = 679,939.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.