Home / 820,174.20-1,230,261.30-618,095.40

Finding the Fourth Proportional to 820,174.20, 1,230,261.30 and 618,095.40

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Solution

The fourth proportional to 820,174.20, 1,230,261.30 and 618,095.40 is: 927,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,174.20 : 1,230,261.30 = 618,095.40 : x
  2. Step 2: Convert to fraction form
    820,174.20/1,230,261.30 = 618,095.40/x
  3. Step 3: Cross multiply
    820,174.20x = 1,230,261.30 × 618,095.40
  4. Step 4: Simplify right side
    820,174.20x = 760,418,850,328.02
  5. Step 5: Solve for x
    x = 760,418,850,328.02/820,174.20
  6. Step 6: Final answer
    x = 927,143.10

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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.