Home / 880,403.40-1,320,605.10-431,193.60

Finding the Fourth Proportional to 880,403.40, 1,320,605.10 and 431,193.60

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Solution

The fourth proportional to 880,403.40, 1,320,605.10 and 431,193.60 is: 646,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,403.40 : 1,320,605.10 = 431,193.60 : x
  2. Step 2: Convert to fraction form
    880,403.40/1,320,605.10 = 431,193.60/x
  3. Step 3: Cross multiply
    880,403.40x = 1,320,605.10 × 431,193.60
  4. Step 4: Simplify right side
    880,403.40x = 569,436,467,247.36
  5. Step 5: Solve for x
    x = 569,436,467,247.36/880,403.40
  6. Step 6: Final answer
    x = 646,790.40

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Half scale
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Double scale
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Similar ratio
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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.