Home / 918,982.93-1,378,661.23-319,990.80

Finding the Fourth Proportional to 918,982.93, 1,378,661.23 and 319,990.80

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Solution

The fourth proportional to 918,982.93, 1,378,661.23 and 319,990.80 is: 480,051.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,982.93 : 1,378,661.23 = 319,990.80 : x
  2. Step 2: Convert to fraction form
    918,982.93/1,378,661.23 = 319,990.80/x
  3. Step 3: Cross multiply
    918,982.93x = 1,378,661.23 × 319,990.80
  4. Step 4: Simplify right side
    918,982.93x = 441,158,908,120.02
  5. Step 5: Solve for x
    x = 441,158,908,120.02/918,982.93
  6. Step 6: Final answer
    x = 480,051.25

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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.