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Finding the Fourth Proportional to 478,341.72, 660,014.64 and 363,589.74

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Solution

The fourth proportional to 478,341.72, 660,014.64 and 363,589.74 is: 501,680.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,341.72 : 660,014.64 = 363,589.74 : x
  2. Step 2: Convert to fraction form
    478,341.72/660,014.64 = 363,589.74/x
  3. Step 3: Cross multiply
    478,341.72x = 660,014.64 × 363,589.74
  4. Step 4: Simplify right side
    478,341.72x = 239,974,551,353.79
  5. Step 5: Solve for x
    x = 239,974,551,353.79/478,341.72
  6. Step 6: Final answer
    x = 501,680.16

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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.