Home / 638,355.02-880,929.72-351,879.89

Finding the Fourth Proportional to 638,355.02, 880,929.72 and 351,879.89

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Solution

The fourth proportional to 638,355.02, 880,929.72 and 351,879.89 is: 485,594.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,355.02 : 880,929.72 = 351,879.89 : x
  2. Step 2: Convert to fraction form
    638,355.02/880,929.72 = 351,879.89/x
  3. Step 3: Cross multiply
    638,355.02x = 880,929.72 × 351,879.89
  4. Step 4: Simplify right side
    638,355.02x = 309,981,452,971.33
  5. Step 5: Solve for x
    x = 309,981,452,971.33/638,355.02
  6. Step 6: Final answer
    x = 485,594.13

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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.