Home / 788,679.80-1,183,019.70-256,254.65

Finding the Fourth Proportional to 788,679.80, 1,183,019.70 and 256,254.65

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Solution

The fourth proportional to 788,679.80, 1,183,019.70 and 256,254.65 is: 384,381.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,679.80 : 1,183,019.70 = 256,254.65 : x
  2. Step 2: Convert to fraction form
    788,679.80/1,183,019.70 = 256,254.65/x
  3. Step 3: Cross multiply
    788,679.80x = 1,183,019.70 × 256,254.65
  4. Step 4: Simplify right side
    788,679.80x = 303,154,299,166.61
  5. Step 5: Solve for x
    x = 303,154,299,166.61/788,679.80
  6. Step 6: Final answer
    x = 384,381.98

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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.