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Finding the Fourth Proportional to 553,627.90, 764,006.50 and 298,979.08

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Solution

The fourth proportional to 553,627.90, 764,006.50 and 298,979.08 is: 412,591.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,627.90 : 764,006.50 = 298,979.08 : x
  2. Step 2: Convert to fraction form
    553,627.90/764,006.50 = 298,979.08/x
  3. Step 3: Cross multiply
    553,627.90x = 764,006.50 × 298,979.08
  4. Step 4: Simplify right side
    553,627.90x = 228,421,960,484.02
  5. Step 5: Solve for x
    x = 228,421,960,484.02/553,627.90
  6. Step 6: Final answer
    x = 412,591.13

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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.