Home / 981,476.32-1,354,485.36-551,891.20

Finding the Fourth Proportional to 981,476.32, 1,354,485.36 and 551,891.20

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Solution

The fourth proportional to 981,476.32, 1,354,485.36 and 551,891.20 is: 761,636.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,476.32 : 1,354,485.36 = 551,891.20 : x
  2. Step 2: Convert to fraction form
    981,476.32/1,354,485.36 = 551,891.20/x
  3. Step 3: Cross multiply
    981,476.32x = 1,354,485.36 × 551,891.20
  4. Step 4: Simplify right side
    981,476.32x = 747,528,550,712.83
  5. Step 5: Solve for x
    x = 747,528,550,712.83/981,476.32
  6. Step 6: Final answer
    x = 761,636.87

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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.