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Finding the Fourth Proportional to 613,084.96, 845,577.95 and 398,294.22

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Solution

The fourth proportional to 613,084.96, 845,577.95 and 398,294.22 is: 549,334.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,084.96 : 845,577.95 = 398,294.22 : x
  2. Step 2: Convert to fraction form
    613,084.96/845,577.95 = 398,294.22/x
  3. Step 3: Cross multiply
    613,084.96x = 845,577.95 × 398,294.22
  4. Step 4: Simplify right side
    613,084.96x = 336,788,810,044.45
  5. Step 5: Solve for x
    x = 336,788,810,044.45/613,084.96
  6. Step 6: Final answer
    x = 549,334.65

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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.