Home / 420,618.28-580,461.60-229,632.40

Finding the Fourth Proportional to 420,618.28, 580,461.60 and 229,632.40

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Solution

The fourth proportional to 420,618.28, 580,461.60 and 229,632.40 is: 316,897.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,618.28 : 580,461.60 = 229,632.40 : x
  2. Step 2: Convert to fraction form
    420,618.28/580,461.60 = 229,632.40/x
  3. Step 3: Cross multiply
    420,618.28x = 580,461.60 × 229,632.40
  4. Step 4: Simplify right side
    420,618.28x = 133,292,790,315.84
  5. Step 5: Solve for x
    x = 133,292,790,315.84/420,618.28
  6. Step 6: Final answer
    x = 316,897.28

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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.