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Finding the Fourth Proportional to 553,376.20, 830,064.30 and 504,387.40

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Solution

The fourth proportional to 553,376.20, 830,064.30 and 504,387.40 is: 756,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,376.20 : 830,064.30 = 504,387.40 : x
  2. Step 2: Convert to fraction form
    553,376.20/830,064.30 = 504,387.40/x
  3. Step 3: Cross multiply
    553,376.20x = 830,064.30 × 504,387.40
  4. Step 4: Simplify right side
    553,376.20x = 418,673,974,109.82
  5. Step 5: Solve for x
    x = 418,673,974,109.82/553,376.20
  6. Step 6: Final answer
    x = 756,581.10

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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.