Home / 870,148.89-1,305,170.55-517,407.66

Finding the Fourth Proportional to 870,148.89, 1,305,170.55 and 517,407.66

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Solution

The fourth proportional to 870,148.89, 1,305,170.55 and 517,407.66 is: 776,080.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,148.89 : 1,305,170.55 = 517,407.66 : x
  2. Step 2: Convert to fraction form
    870,148.89/1,305,170.55 = 517,407.66/x
  3. Step 3: Cross multiply
    870,148.89x = 1,305,170.55 × 517,407.66
  4. Step 4: Simplify right side
    870,148.89x = 675,305,240,176.41
  5. Step 5: Solve for x
    x = 675,305,240,176.41/870,148.89
  6. Step 6: Final answer
    x = 776,080.10

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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.