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Finding the Fourth Proportional to 611,701.20, 858,153.15 and 611,701.20

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Solution

The fourth proportional to 611,701.20, 858,153.15 and 611,701.20 is: 858,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,701.20 : 858,153.15 = 611,701.20 : x
  2. Step 2: Convert to fraction form
    611,701.20/858,153.15 = 611,701.20/x
  3. Step 3: Cross multiply
    611,701.20x = 858,153.15 × 611,701.20
  4. Step 4: Simplify right side
    611,701.20x = 524,933,311,638.78
  5. Step 5: Solve for x
    x = 524,933,311,638.78/611,701.20
  6. Step 6: Final answer
    x = 858,153.15

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1.5x scale

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.