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Finding the Fourth Proportional to 760,719, 1,049,825.03 and 421,187.25

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Solution

The fourth proportional to 760,719, 1,049,825.03 and 421,187.25 is: 581,256.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,719 : 1,049,825.03 = 421,187.25 : x
  2. Step 2: Convert to fraction form
    760,719/1,049,825.03 = 421,187.25/x
  3. Step 3: Cross multiply
    760,719x = 1,049,825.03 × 421,187.25
  4. Step 4: Simplify right side
    760,719x = 442,172,915,260.93
  5. Step 5: Solve for x
    x = 442,172,915,260.93/760,719
  6. Step 6: Final answer
    x = 581,256.57

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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.