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Finding the Fourth Proportional to 478,490.73, 717,059.01 and 265,352.40

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Solution

The fourth proportional to 478,490.73, 717,059.01 and 265,352.40 is: 397,653.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,490.73 : 717,059.01 = 265,352.40 : x
  2. Step 2: Convert to fraction form
    478,490.73/717,059.01 = 265,352.40/x
  3. Step 3: Cross multiply
    478,490.73x = 717,059.01 × 265,352.40
  4. Step 4: Simplify right side
    478,490.73x = 190,273,329,245.12
  5. Step 5: Solve for x
    x = 190,273,329,245.12/478,490.73
  6. Step 6: Final answer
    x = 397,653.11

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1.5x scale

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.