Home / 1,258,139.40-1,887,209.10-977,857.80

Finding the Fourth Proportional to 1,258,139.40, 1,887,209.10 and 977,857.80

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Solution

The fourth proportional to 1,258,139.40, 1,887,209.10 and 977,857.80 is: 1,466,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,139.40 : 1,887,209.10 = 977,857.80 : x
  2. Step 2: Convert to fraction form
    1,258,139.40/1,887,209.10 = 977,857.80/x
  3. Step 3: Cross multiply
    1,258,139.40x = 1,887,209.10 × 977,857.80
  4. Step 4: Simplify right side
    1,258,139.40x = 1,845,422,138,665.98
  5. Step 5: Solve for x
    x = 1,845,422,138,665.98/1,258,139.40
  6. Step 6: Final answer
    x = 1,466,786.70

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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.