Home / 687,713.60-1,031,570.40-538,414.40

Finding the Fourth Proportional to 687,713.60, 1,031,570.40 and 538,414.40

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Solution

The fourth proportional to 687,713.60, 1,031,570.40 and 538,414.40 is: 807,621.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,713.60 : 1,031,570.40 = 538,414.40 : x
  2. Step 2: Convert to fraction form
    687,713.60/1,031,570.40 = 538,414.40/x
  3. Step 3: Cross multiply
    687,713.60x = 1,031,570.40 × 538,414.40
  4. Step 4: Simplify right side
    687,713.60x = 555,412,357,973.76
  5. Step 5: Solve for x
    x = 555,412,357,973.76/687,713.60
  6. Step 6: Final answer
    x = 807,621.60

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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.