Home / 753,864.15-1,130,271.34-280,422.39

Finding the Fourth Proportional to 753,864.15, 1,130,271.34 and 280,422.39

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Solution

The fourth proportional to 753,864.15, 1,130,271.34 and 280,422.39 is: 420,438.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,864.15 : 1,130,271.34 = 280,422.39 : x
  2. Step 2: Convert to fraction form
    753,864.15/1,130,271.34 = 280,422.39/x
  3. Step 3: Cross multiply
    753,864.15x = 1,130,271.34 × 280,422.39
  4. Step 4: Simplify right side
    753,864.15x = 316,953,390,511.30
  5. Step 5: Solve for x
    x = 316,953,390,511.30/753,864.15
  6. Step 6: Final answer
    x = 420,438.34

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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.