Home / 718,311.20-1,077,466.80-657,658.40

Finding the Fourth Proportional to 718,311.20, 1,077,466.80 and 657,658.40

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Solution

The fourth proportional to 718,311.20, 1,077,466.80 and 657,658.40 is: 986,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,311.20 : 1,077,466.80 = 657,658.40 : x
  2. Step 2: Convert to fraction form
    718,311.20/1,077,466.80 = 657,658.40/x
  3. Step 3: Cross multiply
    718,311.20x = 1,077,466.80 × 657,658.40
  4. Step 4: Simplify right side
    718,311.20x = 708,605,091,741.12
  5. Step 5: Solve for x
    x = 708,605,091,741.12/718,311.20
  6. Step 6: Final answer
    x = 986,487.60

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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.