Home / 679,569.12-1,019,217.60-645,847.20

Finding the Fourth Proportional to 679,569.12, 1,019,217.60 and 645,847.20

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Solution

The fourth proportional to 679,569.12, 1,019,217.60 and 645,847.20 is: 968,641.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,569.12 : 1,019,217.60 = 645,847.20 : x
  2. Step 2: Convert to fraction form
    679,569.12/1,019,217.60 = 645,847.20/x
  3. Step 3: Cross multiply
    679,569.12x = 1,019,217.60 × 645,847.20
  4. Step 4: Simplify right side
    679,569.12x = 658,258,833,150.72
  5. Step 5: Solve for x
    x = 658,258,833,150.72/679,569.12
  6. Step 6: Final answer
    x = 968,641.47

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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.