Home / 880,129.70-1,321,069.35-431,357.30

Finding the Fourth Proportional to 880,129.70, 1,321,069.35 and 431,357.30

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Solution

The fourth proportional to 880,129.70, 1,321,069.35 and 431,357.30 is: 647,464.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,129.70 : 1,321,069.35 = 431,357.30 : x
  2. Step 2: Convert to fraction form
    880,129.70/1,321,069.35 = 431,357.30/x
  3. Step 3: Cross multiply
    880,129.70x = 1,321,069.35 × 431,357.30
  4. Step 4: Simplify right side
    880,129.70x = 569,852,907,928.76
  5. Step 5: Solve for x
    x = 569,852,907,928.76/880,129.70
  6. Step 6: Final answer
    x = 647,464.70

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Double scale
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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.