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Finding the Fourth Proportional to 557,792.19, 769,759.20 and 303,143.40

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Solution

The fourth proportional to 557,792.19, 769,759.20 and 303,143.40 is: 418,341.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,792.19 : 769,759.20 = 303,143.40 : x
  2. Step 2: Convert to fraction form
    557,792.19/769,759.20 = 303,143.40/x
  3. Step 3: Cross multiply
    557,792.19x = 769,759.20 × 303,143.40
  4. Step 4: Simplify right side
    557,792.19x = 233,347,421,069.28
  5. Step 5: Solve for x
    x = 233,347,421,069.28/557,792.19
  6. Step 6: Final answer
    x = 418,341.14

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.