Home / 1,139,217.40-1,708,826.10-1,121,502.70

Finding the Fourth Proportional to 1,139,217.40, 1,708,826.10 and 1,121,502.70

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Solution

The fourth proportional to 1,139,217.40, 1,708,826.10 and 1,121,502.70 is: 1,682,254.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,217.40 : 1,708,826.10 = 1,121,502.70 : x
  2. Step 2: Convert to fraction form
    1,139,217.40/1,708,826.10 = 1,121,502.70/x
  3. Step 3: Cross multiply
    1,139,217.40x = 1,708,826.10 × 1,121,502.70
  4. Step 4: Simplify right side
    1,139,217.40x = 1,916,453,084,980.47
  5. Step 5: Solve for x
    x = 1,916,453,084,980.47/1,139,217.40
  6. Step 6: Final answer
    x = 1,682,254.05

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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.