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Finding the Fourth Proportional to 485,783.60, 730,230.60 and 346,506.80

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Solution

The fourth proportional to 485,783.60, 730,230.60 and 346,506.80 is: 520,869.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,783.60 : 730,230.60 = 346,506.80 : x
  2. Step 2: Convert to fraction form
    485,783.60/730,230.60 = 346,506.80/x
  3. Step 3: Cross multiply
    485,783.60x = 730,230.60 × 346,506.80
  4. Step 4: Simplify right side
    485,783.60x = 253,029,868,468.08
  5. Step 5: Solve for x
    x = 253,029,868,468.08/485,783.60
  6. Step 6: Final answer
    x = 520,869.52

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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.