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Finding the Fourth Proportional to 1,234,723.60, 1,703,584.19 and 847,657.40

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Solution

The fourth proportional to 1,234,723.60, 1,703,584.19 and 847,657.40 is: 1,169,537.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234,723.60 : 1,703,584.19 = 847,657.40 : x
  2. Step 2: Convert to fraction form
    1,234,723.60/1,703,584.19 = 847,657.40/x
  3. Step 3: Cross multiply
    1,234,723.60x = 1,703,584.19 × 847,657.40
  4. Step 4: Simplify right side
    1,234,723.60x = 1,444,055,740,938.22
  5. Step 5: Solve for x
    x = 1,444,055,740,938.22/1,234,723.60
  6. Step 6: Final answer
    x = 1,169,537.66

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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.