Home / 527,645.90-791,457.89-128,288.76

Finding the Fourth Proportional to 527,645.90, 791,457.89 and 128,288.76

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Solution

The fourth proportional to 527,645.90, 791,457.89 and 128,288.76 is: 192,430.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,645.90 : 791,457.89 = 128,288.76 : x
  2. Step 2: Convert to fraction form
    527,645.90/791,457.89 = 128,288.76/x
  3. Step 3: Cross multiply
    527,645.90x = 791,457.89 × 128,288.76
  4. Step 4: Simplify right side
    527,645.90x = 101,535,150,658.87
  5. Step 5: Solve for x
    x = 101,535,150,658.87/527,645.90
  6. Step 6: Final answer
    x = 192,430.48

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1.5x scale

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.