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Finding the Fourth Proportional to 561,694.80, 787,772.40 and 561,694.80

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Solution

The fourth proportional to 561,694.80, 787,772.40 and 561,694.80 is: 787,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,694.80 : 787,772.40 = 561,694.80 : x
  2. Step 2: Convert to fraction form
    561,694.80/787,772.40 = 561,694.80/x
  3. Step 3: Cross multiply
    561,694.80x = 787,772.40 × 561,694.80
  4. Step 4: Simplify right side
    561,694.80x = 442,487,660,663.52
  5. Step 5: Solve for x
    x = 442,487,660,663.52/561,694.80
  6. Step 6: Final answer
    x = 787,772.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.