Home / 449,400.16-620,176.89-245,456.95

Finding the Fourth Proportional to 449,400.16, 620,176.89 and 245,456.95

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Solution

The fourth proportional to 449,400.16, 620,176.89 and 245,456.95 is: 338,733.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,400.16 : 620,176.89 = 245,456.95 : x
  2. Step 2: Convert to fraction form
    449,400.16/620,176.89 = 245,456.95/x
  3. Step 3: Cross multiply
    449,400.16x = 620,176.89 × 245,456.95
  4. Step 4: Simplify right side
    449,400.16x = 152,226,727,879.89
  5. Step 5: Solve for x
    x = 152,226,727,879.89/449,400.16
  6. Step 6: Final answer
    x = 338,733.14

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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.