Home / 981,038.40-1,354,322.88-642,024.48

Finding the Fourth Proportional to 981,038.40, 1,354,322.88 and 642,024.48

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Solution

The fourth proportional to 981,038.40, 1,354,322.88 and 642,024.48 is: 886,314.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,038.40 : 1,354,322.88 = 642,024.48 : x
  2. Step 2: Convert to fraction form
    981,038.40/1,354,322.88 = 642,024.48/x
  3. Step 3: Cross multiply
    981,038.40x = 1,354,322.88 × 642,024.48
  4. Step 4: Simplify right side
    981,038.40x = 869,508,442,784.10
  5. Step 5: Solve for x
    x = 869,508,442,784.10/981,038.40
  6. Step 6: Final answer
    x = 886,314.38

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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.