Home / 1,319,240.40-1,979,638.20-871,256.40

Finding the Fourth Proportional to 1,319,240.40, 1,979,638.20 and 871,256.40

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Solution

The fourth proportional to 1,319,240.40, 1,979,638.20 and 871,256.40 is: 1,307,398.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,240.40 : 1,979,638.20 = 871,256.40 : x
  2. Step 2: Convert to fraction form
    1,319,240.40/1,979,638.20 = 871,256.40/x
  3. Step 3: Cross multiply
    1,319,240.40x = 1,979,638.20 × 871,256.40
  4. Step 4: Simplify right side
    1,319,240.40x = 1,724,772,451,434.48
  5. Step 5: Solve for x
    x = 1,724,772,451,434.48/1,319,240.40
  6. Step 6: Final answer
    x = 1,307,398.14

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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.