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Finding the Fourth Proportional to 496,729.80, 745,094.70 and 378,631.80

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Solution

The fourth proportional to 496,729.80, 745,094.70 and 378,631.80 is: 567,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,729.80 : 745,094.70 = 378,631.80 : x
  2. Step 2: Convert to fraction form
    496,729.80/745,094.70 = 378,631.80/x
  3. Step 3: Cross multiply
    496,729.80x = 745,094.70 × 378,631.80
  4. Step 4: Simplify right side
    496,729.80x = 282,116,547,431.46
  5. Step 5: Solve for x
    x = 282,116,547,431.46/496,729.80
  6. Step 6: Final answer
    x = 567,947.70

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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.