Home / 698,282.28-1,047,943.22-518,785.61

Finding the Fourth Proportional to 698,282.28, 1,047,943.22 and 518,785.61

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Solution

The fourth proportional to 698,282.28, 1,047,943.22 and 518,785.61 is: 778,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,282.28 : 1,047,943.22 = 518,785.61 : x
  2. Step 2: Convert to fraction form
    698,282.28/1,047,943.22 = 518,785.61/x
  3. Step 3: Cross multiply
    698,282.28x = 1,047,943.22 × 518,785.61
  4. Step 4: Simplify right side
    698,282.28x = 543,657,854,799.42
  5. Step 5: Solve for x
    x = 543,657,854,799.42/698,282.28
  6. Step 6: Final answer
    x = 778,564.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.