Home / 993,436.80-1,489,312.80-361,982.40

Finding the Fourth Proportional to 993,436.80, 1,489,312.80 and 361,982.40

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Solution

The fourth proportional to 993,436.80, 1,489,312.80 and 361,982.40 is: 542,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,436.80 : 1,489,312.80 = 361,982.40 : x
  2. Step 2: Convert to fraction form
    993,436.80/1,489,312.80 = 361,982.40/x
  3. Step 3: Cross multiply
    993,436.80x = 1,489,312.80 × 361,982.40
  4. Step 4: Simplify right side
    993,436.80x = 539,105,021,694.72
  5. Step 5: Solve for x
    x = 539,105,021,694.72/993,436.80
  6. Step 6: Final answer
    x = 542,666.65

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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.