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Finding the Fourth Proportional to 1,153,579.16, 1,730,738.40 and 807,722.90

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Solution

The fourth proportional to 1,153,579.16, 1,730,738.40 and 807,722.90 is: 1,211,843.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153,579.16 : 1,730,738.40 = 807,722.90 : x
  2. Step 2: Convert to fraction form
    1,153,579.16/1,730,738.40 = 807,722.90/x
  3. Step 3: Cross multiply
    1,153,579.16x = 1,730,738.40 × 807,722.90
  4. Step 4: Simplify right side
    1,153,579.16x = 1,397,957,030,935.67
  5. Step 5: Solve for x
    x = 1,397,957,030,935.67/1,153,579.16
  6. Step 6: Final answer
    x = 1,211,843.18

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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.