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Finding the Fourth Proportional to 700,543.50, 966,751.11 and 398,737.50

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Solution

The fourth proportional to 700,543.50, 966,751.11 and 398,737.50 is: 550,258.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,543.50 : 966,751.11 = 398,737.50 : x
  2. Step 2: Convert to fraction form
    700,543.50/966,751.11 = 398,737.50/x
  3. Step 3: Cross multiply
    700,543.50x = 966,751.11 × 398,737.50
  4. Step 4: Simplify right side
    700,543.50x = 385,479,920,723.63
  5. Step 5: Solve for x
    x = 385,479,920,723.63/700,543.50
  6. Step 6: Final answer
    x = 550,258.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.