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Finding the Fourth Proportional to 478,893.07, 718,807.08 and 395,502.76

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Solution

The fourth proportional to 478,893.07, 718,807.08 and 395,502.76 is: 593,640.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,893.07 : 718,807.08 = 395,502.76 : x
  2. Step 2: Convert to fraction form
    478,893.07/718,807.08 = 395,502.76/x
  3. Step 3: Cross multiply
    478,893.07x = 718,807.08 × 395,502.76
  4. Step 4: Simplify right side
    478,893.07x = 284,290,184,047.54
  5. Step 5: Solve for x
    x = 284,290,184,047.54/478,893.07
  6. Step 6: Final answer
    x = 593,640.21

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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.