Home / 1,276,040.40-1,913,952.60-389,576.40

Finding the Fourth Proportional to 1,276,040.40, 1,913,952.60 and 389,576.40

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Solution

The fourth proportional to 1,276,040.40, 1,913,952.60 and 389,576.40 is: 584,331.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,040.40 : 1,913,952.60 = 389,576.40 : x
  2. Step 2: Convert to fraction form
    1,276,040.40/1,913,952.60 = 389,576.40/x
  3. Step 3: Cross multiply
    1,276,040.40x = 1,913,952.60 × 389,576.40
  4. Step 4: Simplify right side
    1,276,040.40x = 745,630,763,678.64
  5. Step 5: Solve for x
    x = 745,630,763,678.64/1,276,040.40
  6. Step 6: Final answer
    x = 584,331.63

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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.