Home / 769,389.80-1,154,084.70-415,095.80

Finding the Fourth Proportional to 769,389.80, 1,154,084.70 and 415,095.80

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Solution

The fourth proportional to 769,389.80, 1,154,084.70 and 415,095.80 is: 622,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,389.80 : 1,154,084.70 = 415,095.80 : x
  2. Step 2: Convert to fraction form
    769,389.80/1,154,084.70 = 415,095.80/x
  3. Step 3: Cross multiply
    769,389.80x = 1,154,084.70 × 415,095.80
  4. Step 4: Simplify right side
    769,389.80x = 479,055,711,814.26
  5. Step 5: Solve for x
    x = 479,055,711,814.26/769,389.80
  6. Step 6: Final answer
    x = 622,643.70

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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.