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Finding the Fourth Proportional to 474,061.86, 654,192.72 and 280,479.60

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Solution

The fourth proportional to 474,061.86, 654,192.72 and 280,479.60 is: 387,054.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,061.86 : 654,192.72 = 280,479.60 : x
  2. Step 2: Convert to fraction form
    474,061.86/654,192.72 = 280,479.60/x
  3. Step 3: Cross multiply
    474,061.86x = 654,192.72 × 280,479.60
  4. Step 4: Simplify right side
    474,061.86x = 183,487,712,428.51
  5. Step 5: Solve for x
    x = 183,487,712,428.51/474,061.86
  6. Step 6: Final answer
    x = 387,054.37

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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.