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Finding the Fourth Proportional to 611,659.70, 858,095.05 and 611,659.70

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Solution

The fourth proportional to 611,659.70, 858,095.05 and 611,659.70 is: 858,095.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,659.70 : 858,095.05 = 611,659.70 : x
  2. Step 2: Convert to fraction form
    611,659.70/858,095.05 = 611,659.70/x
  3. Step 3: Cross multiply
    611,659.70x = 858,095.05 × 611,659.70
  4. Step 4: Simplify right side
    611,659.70x = 524,862,160,854.49
  5. Step 5: Solve for x
    x = 524,862,160,854.49/611,659.70
  6. Step 6: Final answer
    x = 858,095.05

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.