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Finding the Fourth Proportional to 485,809.60, 730,269.60 and 346,532.80

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Solution

The fourth proportional to 485,809.60, 730,269.60 and 346,532.80 is: 520,908.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,809.60 : 730,269.60 = 346,532.80 : x
  2. Step 2: Convert to fraction form
    485,809.60/730,269.60 = 346,532.80/x
  3. Step 3: Cross multiply
    485,809.60x = 730,269.60 × 346,532.80
  4. Step 4: Simplify right side
    485,809.60x = 253,062,369,242.88
  5. Step 5: Solve for x
    x = 253,062,369,242.88/485,809.60
  6. Step 6: Final answer
    x = 520,908.54

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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.