Home / 478,747.28-660,552.01-308,776.88

Finding the Fourth Proportional to 478,747.28, 660,552.01 and 308,776.88

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Solution

The fourth proportional to 478,747.28, 660,552.01 and 308,776.88 is: 426,035.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,747.28 : 660,552.01 = 308,776.88 : x
  2. Step 2: Convert to fraction form
    478,747.28/660,552.01 = 308,776.88/x
  3. Step 3: Cross multiply
    478,747.28x = 660,552.01 × 308,776.88
  4. Step 4: Simplify right side
    478,747.28x = 203,963,184,650.83
  5. Step 5: Solve for x
    x = 203,963,184,650.83/478,747.28
  6. Step 6: Final answer
    x = 426,035.19

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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.