Home / 724,824.35-1,086,756.65-345,803.58

Finding the Fourth Proportional to 724,824.35, 1,086,756.65 and 345,803.58

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Solution

The fourth proportional to 724,824.35, 1,086,756.65 and 345,803.58 is: 518,476.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,824.35 : 1,086,756.65 = 345,803.58 : x
  2. Step 2: Convert to fraction form
    724,824.35/1,086,756.65 = 345,803.58/x
  3. Step 3: Cross multiply
    724,824.35x = 1,086,756.65 × 345,803.58
  4. Step 4: Simplify right side
    724,824.35x = 375,804,339,726.55
  5. Step 5: Solve for x
    x = 375,804,339,726.55/724,824.35
  6. Step 6: Final answer
    x = 518,476.43

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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.