Home / 981,429.12-1,354,280.64-551,671.68

Finding the Fourth Proportional to 981,429.12, 1,354,280.64 and 551,671.68

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Solution

The fourth proportional to 981,429.12, 1,354,280.64 and 551,671.68 is: 761,255.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,429.12 : 1,354,280.64 = 551,671.68 : x
  2. Step 2: Convert to fraction form
    981,429.12/1,354,280.64 = 551,671.68/x
  3. Step 3: Cross multiply
    981,429.12x = 1,354,280.64 × 551,671.68
  4. Step 4: Simplify right side
    981,429.12x = 747,118,275,860.28
  5. Step 5: Solve for x
    x = 747,118,275,860.28/981,429.12
  6. Step 6: Final answer
    x = 761,255.46

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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.