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Finding the Fourth Proportional to 612,107.55, 918,161.33 and 612,107.55

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Solution

The fourth proportional to 612,107.55, 918,161.33 and 612,107.55 is: 918,161.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,107.55 : 918,161.33 = 612,107.55 : x
  2. Step 2: Convert to fraction form
    612,107.55/918,161.33 = 612,107.55/x
  3. Step 3: Cross multiply
    612,107.55x = 918,161.33 × 612,107.55
  4. Step 4: Simplify right side
    612,107.55x = 562,013,479,150.50
  5. Step 5: Solve for x
    x = 562,013,479,150.50/612,107.55
  6. Step 6: Final answer
    x = 918,161.33

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Half scale
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Double scale
Find fourth proportional to 612,108.55, 918,162.83 and 612,108.55
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.