Home / 781,888.55-1,079,135.30-536,671.86

Finding the Fourth Proportional to 781,888.55, 1,079,135.30 and 536,671.86

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Solution

The fourth proportional to 781,888.55, 1,079,135.30 and 536,671.86 is: 740,695.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,888.55 : 1,079,135.30 = 536,671.86 : x
  2. Step 2: Convert to fraction form
    781,888.55/1,079,135.30 = 536,671.86/x
  3. Step 3: Cross multiply
    781,888.55x = 1,079,135.30 × 536,671.86
  4. Step 4: Simplify right side
    781,888.55x = 579,141,549,984.34
  5. Step 5: Solve for x
    x = 579,141,549,984.34/781,888.55
  6. Step 6: Final answer
    x = 740,695.78

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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.