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Finding the Fourth Proportional to 611,702.20, 858,154.55 and 611,702.20

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Solution

The fourth proportional to 611,702.20, 858,154.55 and 611,702.20 is: 858,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,702.20 : 858,154.55 = 611,702.20 : x
  2. Step 2: Convert to fraction form
    611,702.20/858,154.55 = 611,702.20/x
  3. Step 3: Cross multiply
    611,702.20x = 858,154.55 × 611,702.20
  4. Step 4: Simplify right side
    611,702.20x = 524,935,026,175.01
  5. Step 5: Solve for x
    x = 524,935,026,175.01/611,702.20
  6. Step 6: Final answer
    x = 858,154.55

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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.