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Finding the Fourth Proportional to 670,625.80, 1,003,314.30 and 434,429.80

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Solution

The fourth proportional to 670,625.80, 1,003,314.30 and 434,429.80 is: 649,944.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,625.80 : 1,003,314.30 = 434,429.80 : x
  2. Step 2: Convert to fraction form
    670,625.80/1,003,314.30 = 434,429.80/x
  3. Step 3: Cross multiply
    670,625.80x = 1,003,314.30 × 434,429.80
  4. Step 4: Simplify right side
    670,625.80x = 435,869,630,686.14
  5. Step 5: Solve for x
    x = 435,869,630,686.14/670,625.80
  6. Step 6: Final answer
    x = 649,944.62

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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.