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Finding the Fourth Proportional to 478,609.77, 660,472.99 and 260,820.39

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Solution

The fourth proportional to 478,609.77, 660,472.99 and 260,820.39 is: 359,927.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,609.77 : 660,472.99 = 260,820.39 : x
  2. Step 2: Convert to fraction form
    478,609.77/660,472.99 = 260,820.39/x
  3. Step 3: Cross multiply
    478,609.77x = 660,472.99 × 260,820.39
  4. Step 4: Simplify right side
    478,609.77x = 172,264,822,836.27
  5. Step 5: Solve for x
    x = 172,264,822,836.27/478,609.77
  6. Step 6: Final answer
    x = 359,927.51

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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.