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Finding the Fourth Proportional to 610,859.60, 915,706.20 and 475,848.80

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Solution

The fourth proportional to 610,859.60, 915,706.20 and 475,848.80 is: 713,318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,859.60 : 915,706.20 = 475,848.80 : x
  2. Step 2: Convert to fraction form
    610,859.60/915,706.20 = 475,848.80/x
  3. Step 3: Cross multiply
    610,859.60x = 915,706.20 × 475,848.80
  4. Step 4: Simplify right side
    610,859.60x = 435,737,696,422.56
  5. Step 5: Solve for x
    x = 435,737,696,422.56/610,859.60
  6. Step 6: Final answer
    x = 713,318.90

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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.