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Finding the Fourth Proportional to 478,856.88, 660,802.59 and 261,060.84

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Solution

The fourth proportional to 478,856.88, 660,802.59 and 261,060.84 is: 360,253.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,856.88 : 660,802.59 = 261,060.84 : x
  2. Step 2: Convert to fraction form
    478,856.88/660,802.59 = 261,060.84/x
  3. Step 3: Cross multiply
    478,856.88x = 660,802.59 × 261,060.84
  4. Step 4: Simplify right side
    478,856.88x = 172,509,679,219.58
  5. Step 5: Solve for x
    x = 172,509,679,219.58/478,856.88
  6. Step 6: Final answer
    x = 360,253.11

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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.