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Finding the Fourth Proportional to 700,646.38, 963,320.68 and 623,419.90

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Solution

The fourth proportional to 700,646.38, 963,320.68 and 623,419.90 is: 857,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,646.38 : 963,320.68 = 623,419.90 : x
  2. Step 2: Convert to fraction form
    700,646.38/963,320.68 = 623,419.90/x
  3. Step 3: Cross multiply
    700,646.38x = 963,320.68 × 623,419.90
  4. Step 4: Simplify right side
    700,646.38x = 600,553,281,993.53
  5. Step 5: Solve for x
    x = 600,553,281,993.53/700,646.38
  6. Step 6: Final answer
    x = 857,141.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.