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Finding the Fourth Proportional to 539,085.60, 809,211.60 and 339,631.20

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Solution

The fourth proportional to 539,085.60, 809,211.60 and 339,631.20 is: 509,814.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,085.60 : 809,211.60 = 339,631.20 : x
  2. Step 2: Convert to fraction form
    539,085.60/809,211.60 = 339,631.20/x
  3. Step 3: Cross multiply
    539,085.60x = 809,211.60 × 339,631.20
  4. Step 4: Simplify right side
    539,085.60x = 274,833,506,761.92
  5. Step 5: Solve for x
    x = 274,833,506,761.92/539,085.60
  6. Step 6: Final answer
    x = 509,814.22

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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.