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Finding the Fourth Proportional to 570,103.72, 786,618.20 and 340,626.53

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Solution

The fourth proportional to 570,103.72, 786,618.20 and 340,626.53 is: 469,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,103.72 : 786,618.20 = 340,626.53 : x
  2. Step 2: Convert to fraction form
    570,103.72/786,618.20 = 340,626.53/x
  3. Step 3: Cross multiply
    570,103.72x = 786,618.20 × 340,626.53
  4. Step 4: Simplify right side
    570,103.72x = 267,943,030,718.96
  5. Step 5: Solve for x
    x = 267,943,030,718.96/570,103.72
  6. Step 6: Final answer
    x = 469,989.97

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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.