Home / 838,648.23-1,256,808.51-382,123.78

Finding the Fourth Proportional to 838,648.23, 1,256,808.51 and 382,123.78

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Solution

The fourth proportional to 838,648.23, 1,256,808.51 and 382,123.78 is: 572,655.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,648.23 : 1,256,808.51 = 382,123.78 : x
  2. Step 2: Convert to fraction form
    838,648.23/1,256,808.51 = 382,123.78/x
  3. Step 3: Cross multiply
    838,648.23x = 1,256,808.51 × 382,123.78
  4. Step 4: Simplify right side
    838,648.23x = 480,256,418,568.95
  5. Step 5: Solve for x
    x = 480,256,418,568.95/838,648.23
  6. Step 6: Final answer
    x = 572,655.38

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1.5x scale

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.