Home / 641,418.16-885,143.82-354,938.08

Finding the Fourth Proportional to 641,418.16, 885,143.82 and 354,938.08

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Solution

The fourth proportional to 641,418.16, 885,143.82 and 354,938.08 is: 489,807.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,418.16 : 885,143.82 = 354,938.08 : x
  2. Step 2: Convert to fraction form
    641,418.16/885,143.82 = 354,938.08/x
  3. Step 3: Cross multiply
    641,418.16x = 885,143.82 × 354,938.08
  4. Step 4: Simplify right side
    641,418.16x = 314,171,247,994.67
  5. Step 5: Solve for x
    x = 314,171,247,994.67/641,418.16
  6. Step 6: Final answer
    x = 489,807.22

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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.