Home / 379,746.48-524,060.64-209,986.68

Finding the Fourth Proportional to 379,746.48, 524,060.64 and 209,986.68

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Solution

The fourth proportional to 379,746.48, 524,060.64 and 209,986.68 is: 289,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,746.48 : 524,060.64 = 209,986.68 : x
  2. Step 2: Convert to fraction form
    379,746.48/524,060.64 = 209,986.68/x
  3. Step 3: Cross multiply
    379,746.48x = 524,060.64 × 209,986.68
  4. Step 4: Simplify right side
    379,746.48x = 110,045,753,912.28
  5. Step 5: Solve for x
    x = 110,045,753,912.28/379,746.48
  6. Step 6: Final answer
    x = 289,787.42

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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.