Home / 760,126.35-1,140,638.81-280,689.96

Finding the Fourth Proportional to 760,126.35, 1,140,638.81 and 280,689.96

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Solution

The fourth proportional to 760,126.35, 1,140,638.81 and 280,689.96 is: 421,200.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,126.35 : 1,140,638.81 = 280,689.96 : x
  2. Step 2: Convert to fraction form
    760,126.35/1,140,638.81 = 280,689.96/x
  3. Step 3: Cross multiply
    760,126.35x = 1,140,638.81 × 280,689.96
  4. Step 4: Simplify right side
    760,126.35x = 320,165,860,549.90
  5. Step 5: Solve for x
    x = 320,165,860,549.90/760,126.35
  6. Step 6: Final answer
    x = 421,200.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.