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Finding the Fourth Proportional to 672,086.57, 927,478.96 and 370,280.57

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Solution

The fourth proportional to 672,086.57, 927,478.96 and 370,280.57 is: 510,986.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,086.57 : 927,478.96 = 370,280.57 : x
  2. Step 2: Convert to fraction form
    672,086.57/927,478.96 = 370,280.57/x
  3. Step 3: Cross multiply
    672,086.57x = 927,478.96 × 370,280.57
  4. Step 4: Simplify right side
    672,086.57x = 343,427,432,408.71
  5. Step 5: Solve for x
    x = 343,427,432,408.71/672,086.57
  6. Step 6: Final answer
    x = 510,986.90

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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.