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Finding the Fourth Proportional to 478,456.24, 660,270.23 and 260,663.84

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Solution

The fourth proportional to 478,456.24, 660,270.23 and 260,663.84 is: 359,716.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,456.24 : 660,270.23 = 260,663.84 : x
  2. Step 2: Convert to fraction form
    478,456.24/660,270.23 = 260,663.84/x
  3. Step 3: Cross multiply
    478,456.24x = 660,270.23 × 260,663.84
  4. Step 4: Simplify right side
    478,456.24x = 172,108,574,914.33
  5. Step 5: Solve for x
    x = 172,108,574,914.33/478,456.24
  6. Step 6: Final answer
    x = 359,716.44

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1.5x scale

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.