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Finding the Fourth Proportional to 1,869,459.74, 2,805,061.52 and 731,926.87

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Solution

The fourth proportional to 1,869,459.74, 2,805,061.52 and 731,926.87 is: 1,098,231.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869,459.74 : 2,805,061.52 = 731,926.87 : x
  2. Step 2: Convert to fraction form
    1,869,459.74/2,805,061.52 = 731,926.87/x
  3. Step 3: Cross multiply
    1,869,459.74x = 2,805,061.52 × 731,926.87
  4. Step 4: Simplify right side
    1,869,459.74x = 2,053,099,898,491.04
  5. Step 5: Solve for x
    x = 2,053,099,898,491.04/1,869,459.74
  6. Step 6: Final answer
    x = 1,098,231.67

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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.