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Finding the Fourth Proportional to 670,808.80, 1,003,588.80 and 434,612.80

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Solution

The fourth proportional to 670,808.80, 1,003,588.80 and 434,612.80 is: 650,218.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,808.80 : 1,003,588.80 = 434,612.80 : x
  2. Step 2: Convert to fraction form
    670,808.80/1,003,588.80 = 434,612.80/x
  3. Step 3: Cross multiply
    670,808.80x = 1,003,588.80 × 434,612.80
  4. Step 4: Simplify right side
    670,808.80x = 436,172,538,416.64
  5. Step 5: Solve for x
    x = 436,172,538,416.64/670,808.80
  6. Step 6: Final answer
    x = 650,218.87

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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.