Home / 389,428.71-583,550.15-289,118.31

Finding the Fourth Proportional to 389,428.71, 583,550.15 and 289,118.31

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Solution

The fourth proportional to 389,428.71, 583,550.15 and 289,118.31 is: 433,237.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,428.71 : 583,550.15 = 289,118.31 : x
  2. Step 2: Convert to fraction form
    389,428.71/583,550.15 = 289,118.31/x
  3. Step 3: Cross multiply
    389,428.71x = 583,550.15 × 289,118.31
  4. Step 4: Simplify right side
    389,428.71x = 168,715,031,722.66
  5. Step 5: Solve for x
    x = 168,715,031,722.66/389,428.71
  6. Step 6: Final answer
    x = 433,237.27

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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.