Home / 642,133.20-886,095.03-355,647.12

Finding the Fourth Proportional to 642,133.20, 886,095.03 and 355,647.12

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Solution

The fourth proportional to 642,133.20, 886,095.03 and 355,647.12 is: 490,766.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,133.20 : 886,095.03 = 355,647.12 : x
  2. Step 2: Convert to fraction form
    642,133.20/886,095.03 = 355,647.12/x
  3. Step 3: Cross multiply
    642,133.20x = 886,095.03 × 355,647.12
  4. Step 4: Simplify right side
    642,133.20x = 315,137,145,465.81
  5. Step 5: Solve for x
    x = 315,137,145,465.81/642,133.20
  6. Step 6: Final answer
    x = 490,766.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.