Home / 760,720.75-1,049,827.44-421,189

Finding the Fourth Proportional to 760,720.75, 1,049,827.44 and 421,189

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Solution

The fourth proportional to 760,720.75, 1,049,827.44 and 421,189 is: 581,258.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,720.75 : 1,049,827.44 = 421,189 : x
  2. Step 2: Convert to fraction form
    760,720.75/1,049,827.44 = 421,189/x
  3. Step 3: Cross multiply
    760,720.75x = 1,049,827.44 × 421,189
  4. Step 4: Simplify right side
    760,720.75x = 442,175,769,626.16
  5. Step 5: Solve for x
    x = 442,175,769,626.16/760,720.75
  6. Step 6: Final answer
    x = 581,258.98

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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.