Home / 1,225,365.72-1,690,989.66-688,821.72

Finding the Fourth Proportional to 1,225,365.72, 1,690,989.66 and 688,821.72

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Solution

The fourth proportional to 1,225,365.72, 1,690,989.66 and 688,821.72 is: 950,565.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,365.72 : 1,690,989.66 = 688,821.72 : x
  2. Step 2: Convert to fraction form
    1,225,365.72/1,690,989.66 = 688,821.72/x
  3. Step 3: Cross multiply
    1,225,365.72x = 1,690,989.66 × 688,821.72
  4. Step 4: Simplify right side
    1,225,365.72x = 1,164,790,406,103.42
  5. Step 5: Solve for x
    x = 1,164,790,406,103.42/1,225,365.72
  6. Step 6: Final answer
    x = 950,565.52

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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.