Home / 691,909.40-1,037,864.10-665,337.35

Finding the Fourth Proportional to 691,909.40, 1,037,864.10 and 665,337.35

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Solution

The fourth proportional to 691,909.40, 1,037,864.10 and 665,337.35 is: 998,006.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,909.40 : 1,037,864.10 = 665,337.35 : x
  2. Step 2: Convert to fraction form
    691,909.40/1,037,864.10 = 665,337.35/x
  3. Step 3: Cross multiply
    691,909.40x = 1,037,864.10 × 665,337.35
  4. Step 4: Simplify right side
    691,909.40x = 690,529,749,954.14
  5. Step 5: Solve for x
    x = 690,529,749,954.14/691,909.40
  6. Step 6: Final answer
    x = 998,006.03

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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.