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Finding the Fourth Proportional to 659,315.70, 988,973.55 and 659,315.70

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Solution

The fourth proportional to 659,315.70, 988,973.55 and 659,315.70 is: 988,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,315.70 : 988,973.55 = 659,315.70 : x
  2. Step 2: Convert to fraction form
    659,315.70/988,973.55 = 659,315.70/x
  3. Step 3: Cross multiply
    659,315.70x = 988,973.55 × 659,315.70
  4. Step 4: Simplify right side
    659,315.70x = 652,045,788,399.74
  5. Step 5: Solve for x
    x = 652,045,788,399.74/659,315.70
  6. Step 6: Final answer
    x = 988,973.55

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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.