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Finding the Fourth Proportional to 520,056.60, 780,084.90 and 165,098.40

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Solution

The fourth proportional to 520,056.60, 780,084.90 and 165,098.40 is: 247,647.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,056.60 : 780,084.90 = 165,098.40 : x
  2. Step 2: Convert to fraction form
    520,056.60/780,084.90 = 165,098.40/x
  3. Step 3: Cross multiply
    520,056.60x = 780,084.90 × 165,098.40
  4. Step 4: Simplify right side
    520,056.60x = 128,790,768,854.16
  5. Step 5: Solve for x
    x = 128,790,768,854.16/520,056.60
  6. Step 6: Final answer
    x = 247,647.60

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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.