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Finding the Fourth Proportional to 705,215.32, 972,956.76 and 450,713.32

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Solution

The fourth proportional to 705,215.32, 972,956.76 and 450,713.32 is: 621,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,215.32 : 972,956.76 = 450,713.32 : x
  2. Step 2: Convert to fraction form
    705,215.32/972,956.76 = 450,713.32/x
  3. Step 3: Cross multiply
    705,215.32x = 972,956.76 × 450,713.32
  4. Step 4: Simplify right side
    705,215.32x = 438,524,571,516.04
  5. Step 5: Solve for x
    x = 438,524,571,516.04/705,215.32
  6. Step 6: Final answer
    x = 621,830.75

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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.