Home / 644,122.80-966,184.20-407,732.40

Finding the Fourth Proportional to 644,122.80, 966,184.20 and 407,732.40

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Solution

The fourth proportional to 644,122.80, 966,184.20 and 407,732.40 is: 611,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,122.80 : 966,184.20 = 407,732.40 : x
  2. Step 2: Convert to fraction form
    644,122.80/966,184.20 = 407,732.40/x
  3. Step 3: Cross multiply
    644,122.80x = 966,184.20 × 407,732.40
  4. Step 4: Simplify right side
    644,122.80x = 393,944,602,708.08
  5. Step 5: Solve for x
    x = 393,944,602,708.08/644,122.80
  6. Step 6: Final answer
    x = 611,598.60

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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.