Home / 911,869.43-1,258,384.01-498,414.74

Finding the Fourth Proportional to 911,869.43, 1,258,384.01 and 498,414.74

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Solution

The fourth proportional to 911,869.43, 1,258,384.01 and 498,414.74 is: 687,814.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,869.43 : 1,258,384.01 = 498,414.74 : x
  2. Step 2: Convert to fraction form
    911,869.43/1,258,384.01 = 498,414.74/x
  3. Step 3: Cross multiply
    911,869.43x = 1,258,384.01 × 498,414.74
  4. Step 4: Simplify right side
    911,869.43x = 627,197,130,380.31
  5. Step 5: Solve for x
    x = 627,197,130,380.31/911,869.43
  6. Step 6: Final answer
    x = 687,814.63

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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.