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Finding the Fourth Proportional to 642,626.96, 963,017 and 361,550.48

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Solution

The fourth proportional to 642,626.96, 963,017 and 361,550.48 is: 541,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,626.96 : 963,017 = 361,550.48 : x
  2. Step 2: Convert to fraction form
    642,626.96/963,017 = 361,550.48/x
  3. Step 3: Cross multiply
    642,626.96x = 963,017 × 361,550.48
  4. Step 4: Simplify right side
    642,626.96x = 348,179,258,598.16
  5. Step 5: Solve for x
    x = 348,179,258,598.16/642,626.96
  6. Step 6: Final answer
    x = 541,806.18

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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.