Home / 753,820.80-1,130,342.40-280,262.40

Finding the Fourth Proportional to 753,820.80, 1,130,342.40 and 280,262.40

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Solution

The fourth proportional to 753,820.80, 1,130,342.40 and 280,262.40 is: 420,249.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,820.80 : 1,130,342.40 = 280,262.40 : x
  2. Step 2: Convert to fraction form
    753,820.80/1,130,342.40 = 280,262.40/x
  3. Step 3: Cross multiply
    753,820.80x = 1,130,342.40 × 280,262.40
  4. Step 4: Simplify right side
    753,820.80x = 316,792,473,845.76
  5. Step 5: Solve for x
    x = 316,792,473,845.76/753,820.80
  6. Step 6: Final answer
    x = 420,249.05

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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.