Home / 644,246.21-888,916.60-389,591.93

Finding the Fourth Proportional to 644,246.21, 888,916.60 and 389,591.93

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Solution

The fourth proportional to 644,246.21, 888,916.60 and 389,591.93 is: 537,550.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,246.21 : 888,916.60 = 389,591.93 : x
  2. Step 2: Convert to fraction form
    644,246.21/888,916.60 = 389,591.93/x
  3. Step 3: Cross multiply
    644,246.21x = 888,916.60 × 389,591.93
  4. Step 4: Simplify right side
    644,246.21x = 346,314,733,803.04
  5. Step 5: Solve for x
    x = 346,314,733,803.04/644,246.21
  6. Step 6: Final answer
    x = 537,550.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.