Home / 977,126.80-1,465,690.20-811,238.80

Finding the Fourth Proportional to 977,126.80, 1,465,690.20 and 811,238.80

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Solution

The fourth proportional to 977,126.80, 1,465,690.20 and 811,238.80 is: 1,216,858.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,126.80 : 1,465,690.20 = 811,238.80 : x
  2. Step 2: Convert to fraction form
    977,126.80/1,465,690.20 = 811,238.80/x
  3. Step 3: Cross multiply
    977,126.80x = 1,465,690.20 × 811,238.80
  4. Step 4: Simplify right side
    977,126.80x = 1,189,024,759,019.76
  5. Step 5: Solve for x
    x = 1,189,024,759,019.76/977,126.80
  6. Step 6: Final answer
    x = 1,216,858.20

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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.