Home / 812,866.43-1,121,740.98-450,289.16

Finding the Fourth Proportional to 812,866.43, 1,121,740.98 and 450,289.16

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Solution

The fourth proportional to 812,866.43, 1,121,740.98 and 450,289.16 is: 621,390.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,866.43 : 1,121,740.98 = 450,289.16 : x
  2. Step 2: Convert to fraction form
    812,866.43/1,121,740.98 = 450,289.16/x
  3. Step 3: Cross multiply
    812,866.43x = 1,121,740.98 × 450,289.16
  4. Step 4: Simplify right side
    812,866.43x = 505,107,803,621.78
  5. Step 5: Solve for x
    x = 505,107,803,621.78/812,866.43
  6. Step 6: Final answer
    x = 621,390.91

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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.