Home / 1,258,428.30-1,887,642.45-906,758.70

Finding the Fourth Proportional to 1,258,428.30, 1,887,642.45 and 906,758.70

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Solution

The fourth proportional to 1,258,428.30, 1,887,642.45 and 906,758.70 is: 1,360,138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,428.30 : 1,887,642.45 = 906,758.70 : x
  2. Step 2: Convert to fraction form
    1,258,428.30/1,887,642.45 = 906,758.70/x
  3. Step 3: Cross multiply
    1,258,428.30x = 1,887,642.45 × 906,758.70
  4. Step 4: Simplify right side
    1,258,428.30x = 1,711,636,214,026.82
  5. Step 5: Solve for x
    x = 1,711,636,214,026.82/1,258,428.30
  6. Step 6: Final answer
    x = 1,360,138.05

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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.