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Finding the Fourth Proportional to 865,745.40, 1,194,705.72 and 483,775.32

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Solution

The fourth proportional to 865,745.40, 1,194,705.72 and 483,775.32 is: 667,597.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,745.40 : 1,194,705.72 = 483,775.32 : x
  2. Step 2: Convert to fraction form
    865,745.40/1,194,705.72 = 483,775.32/x
  3. Step 3: Cross multiply
    865,745.40x = 1,194,705.72 × 483,775.32
  4. Step 4: Simplify right side
    865,745.40x = 577,969,141,998.83
  5. Step 5: Solve for x
    x = 577,969,141,998.83/865,745.40
  6. Step 6: Final answer
    x = 667,597.13

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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.