Home / 642,256.20-963,384.30-193,046.40

Finding the Fourth Proportional to 642,256.20, 963,384.30 and 193,046.40

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Solution

The fourth proportional to 642,256.20, 963,384.30 and 193,046.40 is: 289,569.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,256.20 : 963,384.30 = 193,046.40 : x
  2. Step 2: Convert to fraction form
    642,256.20/963,384.30 = 193,046.40/x
  3. Step 3: Cross multiply
    642,256.20x = 963,384.30 × 193,046.40
  4. Step 4: Simplify right side
    642,256.20x = 185,977,870,931.52
  5. Step 5: Solve for x
    x = 185,977,870,931.52/642,256.20
  6. Step 6: Final answer
    x = 289,569.60

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Double scale
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Similar ratio
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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.