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Finding the Fourth Proportional to 613,741.18, 920,590 and 187,259.78

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Solution

The fourth proportional to 613,741.18, 920,590 and 187,259.78 is: 280,883.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,741.18 : 920,590 = 187,259.78 : x
  2. Step 2: Convert to fraction form
    613,741.18/920,590 = 187,259.78/x
  3. Step 3: Cross multiply
    613,741.18x = 920,590 × 187,259.78
  4. Step 4: Simplify right side
    613,741.18x = 172,389,480,870.20
  5. Step 5: Solve for x
    x = 172,389,480,870.20/613,741.18
  6. Step 6: Final answer
    x = 280,883.03

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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.