Home / 1,187,723.70-1,781,569.35-389,031.30

Finding the Fourth Proportional to 1,187,723.70, 1,781,569.35 and 389,031.30

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Solution

The fourth proportional to 1,187,723.70, 1,781,569.35 and 389,031.30 is: 583,541.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,723.70 : 1,781,569.35 = 389,031.30 : x
  2. Step 2: Convert to fraction form
    1,187,723.70/1,781,569.35 = 389,031.30/x
  3. Step 3: Cross multiply
    1,187,723.70x = 1,781,569.35 × 389,031.30
  4. Step 4: Simplify right side
    1,187,723.70x = 693,086,240,270.66
  5. Step 5: Solve for x
    x = 693,086,240,270.66/1,187,723.70
  6. Step 6: Final answer
    x = 583,541.64

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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.