Home / 487,885-731,071.74-338,415.88

Finding the Fourth Proportional to 487,885, 731,071.74 and 338,415.88

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Solution

The fourth proportional to 487,885, 731,071.74 and 338,415.88 is: 507,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,885 : 731,071.74 = 338,415.88 : x
  2. Step 2: Convert to fraction form
    487,885/731,071.74 = 338,415.88/x
  3. Step 3: Cross multiply
    487,885x = 731,071.74 × 338,415.88
  4. Step 4: Simplify right side
    487,885x = 247,406,286,235.23
  5. Step 5: Solve for x
    x = 247,406,286,235.23/487,885
  6. Step 6: Final answer
    x = 507,099.60

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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.