Home / 687,727.60-1,031,591.40-538,428.40

Finding the Fourth Proportional to 687,727.60, 1,031,591.40 and 538,428.40

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Solution

The fourth proportional to 687,727.60, 1,031,591.40 and 538,428.40 is: 807,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,727.60 : 1,031,591.40 = 538,428.40 : x
  2. Step 2: Convert to fraction form
    687,727.60/1,031,591.40 = 538,428.40/x
  3. Step 3: Cross multiply
    687,727.60x = 1,031,591.40 × 538,428.40
  4. Step 4: Simplify right side
    687,727.60x = 555,438,106,955.76
  5. Step 5: Solve for x
    x = 555,438,106,955.76/687,727.60
  6. Step 6: Final answer
    x = 807,642.60

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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.