Home / 812,706.74-1,121,486.03-450,108.98

Finding the Fourth Proportional to 812,706.74, 1,121,486.03 and 450,108.98

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Solution

The fourth proportional to 812,706.74, 1,121,486.03 and 450,108.98 is: 621,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,706.74 : 1,121,486.03 = 450,108.98 : x
  2. Step 2: Convert to fraction form
    812,706.74/1,121,486.03 = 450,108.98/x
  3. Step 3: Cross multiply
    812,706.74x = 1,121,486.03 × 450,108.98
  4. Step 4: Simplify right side
    812,706.74x = 504,790,933,047.55
  5. Step 5: Solve for x
    x = 504,790,933,047.55/812,706.74
  6. Step 6: Final answer
    x = 621,123.10

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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.