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Finding the Fourth Proportional to 909,909.70, 1,364,864.55 and 898,099.90

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Solution

The fourth proportional to 909,909.70, 1,364,864.55 and 898,099.90 is: 1,347,149.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,909.70 : 1,364,864.55 = 898,099.90 : x
  2. Step 2: Convert to fraction form
    909,909.70/1,364,864.55 = 898,099.90/x
  3. Step 3: Cross multiply
    909,909.70x = 1,364,864.55 × 898,099.90
  4. Step 4: Simplify right side
    909,909.70x = 1,225,784,715,868.55
  5. Step 5: Solve for x
    x = 1,225,784,715,868.55/909,909.70
  6. Step 6: Final answer
    x = 1,347,149.85

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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.