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Finding the Fourth Proportional to 553,619.60, 830,429.40 and 453,892.40

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Solution

The fourth proportional to 553,619.60, 830,429.40 and 453,892.40 is: 680,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,619.60 : 830,429.40 = 453,892.40 : x
  2. Step 2: Convert to fraction form
    553,619.60/830,429.40 = 453,892.40/x
  3. Step 3: Cross multiply
    553,619.60x = 830,429.40 × 453,892.40
  4. Step 4: Simplify right side
    553,619.60x = 376,925,593,396.56
  5. Step 5: Solve for x
    x = 376,925,593,396.56/553,619.60
  6. Step 6: Final answer
    x = 680,838.60

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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.