Home / 1,425,128.92-1,966,709.75-813,269.50

Finding the Fourth Proportional to 1,425,128.92, 1,966,709.75 and 813,269.50

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Solution

The fourth proportional to 1,425,128.92, 1,966,709.75 and 813,269.50 is: 1,122,330.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,128.92 : 1,966,709.75 = 813,269.50 : x
  2. Step 2: Convert to fraction form
    1,425,128.92/1,966,709.75 = 813,269.50/x
  3. Step 3: Cross multiply
    1,425,128.92x = 1,966,709.75 × 813,269.50
  4. Step 4: Simplify right side
    1,425,128.92x = 1,599,465,050,961.28
  5. Step 5: Solve for x
    x = 1,599,465,050,961.28/1,425,128.92
  6. Step 6: Final answer
    x = 1,122,330.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.