Home / 857,038.05-1,285,719.57-344,742.39

Finding the Fourth Proportional to 857,038.05, 1,285,719.57 and 344,742.39

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Solution

The fourth proportional to 857,038.05, 1,285,719.57 and 344,742.39 is: 517,178.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,038.05 : 1,285,719.57 = 344,742.39 : x
  2. Step 2: Convert to fraction form
    857,038.05/1,285,719.57 = 344,742.39/x
  3. Step 3: Cross multiply
    857,038.05x = 1,285,719.57 × 344,742.39
  4. Step 4: Simplify right side
    857,038.05x = 443,242,037,431.57
  5. Step 5: Solve for x
    x = 443,242,037,431.57/857,038.05
  6. Step 6: Final answer
    x = 517,178.95

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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.