Home / 462,985.20-638,916.12-261,788.40

Finding the Fourth Proportional to 462,985.20, 638,916.12 and 261,788.40

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Solution

The fourth proportional to 462,985.20, 638,916.12 and 261,788.40 is: 361,266.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,985.20 : 638,916.12 = 261,788.40 : x
  2. Step 2: Convert to fraction form
    462,985.20/638,916.12 = 261,788.40/x
  3. Step 3: Cross multiply
    462,985.20x = 638,916.12 × 261,788.40
  4. Step 4: Simplify right side
    462,985.20x = 167,260,828,789.01
  5. Step 5: Solve for x
    x = 167,260,828,789.01/462,985.20
  6. Step 6: Final answer
    x = 361,266.04

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1.5x scale

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.