Home / 1,284,345.76-1,772,397.10-711,422.84

Finding the Fourth Proportional to 1,284,345.76, 1,772,397.10 and 711,422.84

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Solution

The fourth proportional to 1,284,345.76, 1,772,397.10 and 711,422.84 is: 981,763.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,345.76 : 1,772,397.10 = 711,422.84 : x
  2. Step 2: Convert to fraction form
    1,284,345.76/1,772,397.10 = 711,422.84/x
  3. Step 3: Cross multiply
    1,284,345.76x = 1,772,397.10 × 711,422.84
  4. Step 4: Simplify right side
    1,284,345.76x = 1,260,923,778,489.76
  5. Step 5: Solve for x
    x = 1,260,923,778,489.76/1,284,345.76
  6. Step 6: Final answer
    x = 981,763.49

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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.