Home / 769,712.68-1,154,156.46-385,401.16

Finding the Fourth Proportional to 769,712.68, 1,154,156.46 and 385,401.16

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Solution

The fourth proportional to 769,712.68, 1,154,156.46 and 385,401.16 is: 577,895.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,712.68 : 1,154,156.46 = 385,401.16 : x
  2. Step 2: Convert to fraction form
    769,712.68/1,154,156.46 = 385,401.16/x
  3. Step 3: Cross multiply
    769,712.68x = 1,154,156.46 × 385,401.16
  4. Step 4: Simplify right side
    769,712.68x = 444,813,238,505.49
  5. Step 5: Solve for x
    x = 444,813,238,505.49/769,712.68
  6. Step 6: Final answer
    x = 577,895.17

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Double scale
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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.