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Finding the Fourth Proportional to 478,598.93, 660,457.96 and 260,809.49

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Solution

The fourth proportional to 478,598.93, 660,457.96 and 260,809.49 is: 359,912.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,598.93 : 660,457.96 = 260,809.49 : x
  2. Step 2: Convert to fraction form
    478,598.93/660,457.96 = 260,809.49/x
  3. Step 3: Cross multiply
    478,598.93x = 660,457.96 × 260,809.49
  4. Step 4: Simplify right side
    478,598.93x = 172,253,705,691.20
  5. Step 5: Solve for x
    x = 172,253,705,691.20/478,598.93
  6. Step 6: Final answer
    x = 359,912.44

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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.