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Finding the Fourth Proportional to 478,771.75, 660,832.19 and 282,710.04

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Solution

The fourth proportional to 478,771.75, 660,832.19 and 282,710.04 is: 390,214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,771.75 : 660,832.19 = 282,710.04 : x
  2. Step 2: Convert to fraction form
    478,771.75/660,832.19 = 282,710.04/x
  3. Step 3: Cross multiply
    478,771.75x = 660,832.19 × 282,710.04
  4. Step 4: Simplify right side
    478,771.75x = 186,823,894,868.19
  5. Step 5: Solve for x
    x = 186,823,894,868.19/478,771.75
  6. Step 6: Final answer
    x = 390,214.95

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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.