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Finding the Fourth Proportional to 658,459.70, 987,689.93 and 185,145.06

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Solution

The fourth proportional to 658,459.70, 987,689.93 and 185,145.06 is: 277,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,459.70 : 987,689.93 = 185,145.06 : x
  2. Step 2: Convert to fraction form
    658,459.70/987,689.93 = 185,145.06/x
  3. Step 3: Cross multiply
    658,459.70x = 987,689.93 × 185,145.06
  4. Step 4: Simplify right side
    658,459.70x = 182,865,909,615.04
  5. Step 5: Solve for x
    x = 182,865,909,615.04/658,459.70
  6. Step 6: Final answer
    x = 277,717.69

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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.