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Finding the Fourth Proportional to 717,872.22, 991,022.34 and 556,364.70

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Solution

The fourth proportional to 717,872.22, 991,022.34 and 556,364.70 is: 768,061.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,872.22 : 991,022.34 = 556,364.70 : x
  2. Step 2: Convert to fraction form
    717,872.22/991,022.34 = 556,364.70/x
  3. Step 3: Cross multiply
    717,872.22x = 991,022.34 × 556,364.70
  4. Step 4: Simplify right side
    717,872.22x = 551,369,846,887.40
  5. Step 5: Solve for x
    x = 551,369,846,887.40/717,872.22
  6. Step 6: Final answer
    x = 768,061.27

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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.