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Finding the Fourth Proportional to 760,492.67, 1,049,479.89 and 420,960.92

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Solution

The fourth proportional to 760,492.67, 1,049,479.89 and 420,960.92 is: 580,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,492.67 : 1,049,479.89 = 420,960.92 : x
  2. Step 2: Convert to fraction form
    760,492.67/1,049,479.89 = 420,960.92/x
  3. Step 3: Cross multiply
    760,492.67x = 1,049,479.89 × 420,960.92
  4. Step 4: Simplify right side
    760,492.67x = 441,790,014,768.50
  5. Step 5: Solve for x
    x = 441,790,014,768.50/760,492.67
  6. Step 6: Final answer
    x = 580,926.07

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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.