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Finding the Fourth Proportional to 553,375.20, 830,062.80 and 504,386.40

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Solution

The fourth proportional to 553,375.20, 830,062.80 and 504,386.40 is: 756,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,375.20 : 830,062.80 = 504,386.40 : x
  2. Step 2: Convert to fraction form
    553,375.20/830,062.80 = 504,386.40/x
  3. Step 3: Cross multiply
    553,375.20x = 830,062.80 × 504,386.40
  4. Step 4: Simplify right side
    553,375.20x = 418,672,387,465.92
  5. Step 5: Solve for x
    x = 418,672,387,465.92/553,375.20
  6. Step 6: Final answer
    x = 756,579.60

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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.