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Finding the Fourth Proportional to 977,758.70, 1,463,685.60 and 859,660.70

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Solution

The fourth proportional to 977,758.70, 1,463,685.60 and 859,660.70 is: 1,286,895.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,758.70 : 1,463,685.60 = 859,660.70 : x
  2. Step 2: Convert to fraction form
    977,758.70/1,463,685.60 = 859,660.70/x
  3. Step 3: Cross multiply
    977,758.70x = 1,463,685.60 × 859,660.70
  4. Step 4: Simplify right side
    977,758.70x = 1,258,272,987,475.92
  5. Step 5: Solve for x
    x = 1,258,272,987,475.92/977,758.70
  6. Step 6: Final answer
    x = 1,286,895.21

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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.