Home / 761,340.39-1,050,174.09-489,761.97

Finding the Fourth Proportional to 761,340.39, 1,050,174.09 and 489,761.97

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Solution

The fourth proportional to 761,340.39, 1,050,174.09 and 489,761.97 is: 675,565.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,340.39 : 1,050,174.09 = 489,761.97 : x
  2. Step 2: Convert to fraction form
    761,340.39/1,050,174.09 = 489,761.97/x
  3. Step 3: Cross multiply
    761,340.39x = 1,050,174.09 × 489,761.97
  4. Step 4: Simplify right side
    761,340.39x = 514,335,331,161.36
  5. Step 5: Solve for x
    x = 514,335,331,161.36/761,340.39
  6. Step 6: Final answer
    x = 675,565.54

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1.5x scale

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.