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Finding the Fourth Proportional to 1,281,652, 1,768,610.64 and 708,658.72

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Solution

The fourth proportional to 1,281,652, 1,768,610.64 and 708,658.72 is: 977,910.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,652 : 1,768,610.64 = 708,658.72 : x
  2. Step 2: Convert to fraction form
    1,281,652/1,768,610.64 = 708,658.72/x
  3. Step 3: Cross multiply
    1,281,652x = 1,768,610.64 × 708,658.72
  4. Step 4: Simplify right side
    1,281,652x = 1,253,341,352,320.78
  5. Step 5: Solve for x
    x = 1,253,341,352,320.78/1,281,652
  6. Step 6: Final answer
    x = 977,910.82

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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.