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Finding the Fourth Proportional to 700,877.80, 967,211.75 and 378,587.90

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Solution

The fourth proportional to 700,877.80, 967,211.75 and 378,587.90 is: 522,451.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,877.80 : 967,211.75 = 378,587.90 : x
  2. Step 2: Convert to fraction form
    700,877.80/967,211.75 = 378,587.90/x
  3. Step 3: Cross multiply
    700,877.80x = 967,211.75 × 378,587.90
  4. Step 4: Simplify right side
    700,877.80x = 366,174,661,082.20
  5. Step 5: Solve for x
    x = 366,174,661,082.20/700,877.80
  6. Step 6: Final answer
    x = 522,451.50

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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.