Home / 687,854.22-949,240.80-381,931.26

Finding the Fourth Proportional to 687,854.22, 949,240.80 and 381,931.26

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Solution

The fourth proportional to 687,854.22, 949,240.80 and 381,931.26 is: 527,066.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,854.22 : 949,240.80 = 381,931.26 : x
  2. Step 2: Convert to fraction form
    687,854.22/949,240.80 = 381,931.26/x
  3. Step 3: Cross multiply
    687,854.22x = 949,240.80 × 381,931.26
  4. Step 4: Simplify right side
    687,854.22x = 362,544,734,787.41
  5. Step 5: Solve for x
    x = 362,544,734,787.41/687,854.22
  6. Step 6: Final answer
    x = 527,066.24

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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.