Home / 644,808.20-966,981.90-289,992.20

Finding the Fourth Proportional to 644,808.20, 966,981.90 and 289,992.20

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Solution

The fourth proportional to 644,808.20, 966,981.90 and 289,992.20 is: 434,884.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,808.20 : 966,981.90 = 289,992.20 : x
  2. Step 2: Convert to fraction form
    644,808.20/966,981.90 = 289,992.20/x
  3. Step 3: Cross multiply
    644,808.20x = 966,981.90 × 289,992.20
  4. Step 4: Simplify right side
    644,808.20x = 280,417,208,541.18
  5. Step 5: Solve for x
    x = 280,417,208,541.18/644,808.20
  6. Step 6: Final answer
    x = 434,884.68

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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.