Home / 644,905.40-966,897.30-289,628.60

Finding the Fourth Proportional to 644,905.40, 966,897.30 and 289,628.60

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Solution

The fourth proportional to 644,905.40, 966,897.30 and 289,628.60 is: 434,235.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,905.40 : 966,897.30 = 289,628.60 : x
  2. Step 2: Convert to fraction form
    644,905.40/966,897.30 = 289,628.60/x
  3. Step 3: Cross multiply
    644,905.40x = 966,897.30 × 289,628.60
  4. Step 4: Simplify right side
    644,905.40x = 280,041,111,342.78
  5. Step 5: Solve for x
    x = 280,041,111,342.78/644,905.40
  6. Step 6: Final answer
    x = 434,235.95

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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.