Home / 708,517.64-977,705.42-398,466.66

Finding the Fourth Proportional to 708,517.64, 977,705.42 and 398,466.66

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Solution

The fourth proportional to 708,517.64, 977,705.42 and 398,466.66 is: 549,856.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,517.64 : 977,705.42 = 398,466.66 : x
  2. Step 2: Convert to fraction form
    708,517.64/977,705.42 = 398,466.66/x
  3. Step 3: Cross multiply
    708,517.64x = 977,705.42 × 398,466.66
  4. Step 4: Simplify right side
    708,517.64x = 389,583,013,171.30
  5. Step 5: Solve for x
    x = 389,583,013,171.30/708,517.64
  6. Step 6: Final answer
    x = 549,856.48

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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.