Home / 579,938.58-869,470.47-380,309.22

Finding the Fourth Proportional to 579,938.58, 869,470.47 and 380,309.22

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Solution

The fourth proportional to 579,938.58, 869,470.47 and 380,309.22 is: 570,176.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,938.58 : 869,470.47 = 380,309.22 : x
  2. Step 2: Convert to fraction form
    579,938.58/869,470.47 = 380,309.22/x
  3. Step 3: Cross multiply
    579,938.58x = 869,470.47 × 380,309.22
  4. Step 4: Simplify right side
    579,938.58x = 330,667,636,258.73
  5. Step 5: Solve for x
    x = 330,667,636,258.73/579,938.58
  6. Step 6: Final answer
    x = 570,176.99

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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.