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Finding the Fourth Proportional to 553,437.20, 830,155.80 and 483,453.20

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Solution

The fourth proportional to 553,437.20, 830,155.80 and 483,453.20 is: 725,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,437.20 : 830,155.80 = 483,453.20 : x
  2. Step 2: Convert to fraction form
    553,437.20/830,155.80 = 483,453.20/x
  3. Step 3: Cross multiply
    553,437.20x = 830,155.80 × 483,453.20
  4. Step 4: Simplify right side
    553,437.20x = 401,341,478,008.56
  5. Step 5: Solve for x
    x = 401,341,478,008.56/553,437.20
  6. Step 6: Final answer
    x = 725,179.80

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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.