Home / 287,600,550.30-431,400,825.45-199,593,920.70

Finding the Fourth Proportional to 287,600,550.30, 431,400,825.45 and 199,593,920.70

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Solution

The fourth proportional to 287,600,550.30, 431,400,825.45 and 199,593,920.70 is: 299,390,881.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,600,550.30 : 431,400,825.45 = 199,593,920.70 : x
  2. Step 2: Convert to fraction form
    287,600,550.30/431,400,825.45 = 199,593,920.70/x
  3. Step 3: Cross multiply
    287,600,550.30x = 431,400,825.45 × 199,593,920.70
  4. Step 4: Simplify right side
    287,600,550.30x = 86,104,982,144,781,840
  5. Step 5: Solve for x
    x = 86,104,982,144,781,840/287,600,550.30
  6. Step 6: Final answer
    x = 299,390,881.05

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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.