Home / 812,905.52-1,121,809.47-450,352.94

Finding the Fourth Proportional to 812,905.52, 1,121,809.47 and 450,352.94

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Solution

The fourth proportional to 812,905.52, 1,121,809.47 and 450,352.94 is: 621,486.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,905.52 : 1,121,809.47 = 450,352.94 : x
  2. Step 2: Convert to fraction form
    812,905.52/1,121,809.47 = 450,352.94/x
  3. Step 3: Cross multiply
    812,905.52x = 1,121,809.47 × 450,352.94
  4. Step 4: Simplify right side
    812,905.52x = 505,210,192,934.34
  5. Step 5: Solve for x
    x = 505,210,192,934.34/812,905.52
  6. Step 6: Final answer
    x = 621,486.98

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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.