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Finding the Fourth Proportional to 561,615.30, 787,661.10 and 561,615.30

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Solution

The fourth proportional to 561,615.30, 787,661.10 and 561,615.30 is: 787,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,615.30 : 787,661.10 = 561,615.30 : x
  2. Step 2: Convert to fraction form
    561,615.30/787,661.10 = 561,615.30/x
  3. Step 3: Cross multiply
    561,615.30x = 787,661.10 × 561,615.30
  4. Step 4: Simplify right side
    561,615.30x = 442,362,524,974.83
  5. Step 5: Solve for x
    x = 442,362,524,974.83/561,615.30
  6. Step 6: Final answer
    x = 787,661.10

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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.