Home / 918,621.99-1,378,080.81-319,753.35

Finding the Fourth Proportional to 918,621.99, 1,378,080.81 and 319,753.35

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Solution

The fourth proportional to 918,621.99, 1,378,080.81 and 319,753.35 is: 479,681.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,621.99 : 1,378,080.81 = 319,753.35 : x
  2. Step 2: Convert to fraction form
    918,621.99/1,378,080.81 = 319,753.35/x
  3. Step 3: Cross multiply
    918,621.99x = 1,378,080.81 × 319,753.35
  4. Step 4: Simplify right side
    918,621.99x = 440,645,955,568.21
  5. Step 5: Solve for x
    x = 440,645,955,568.21/918,621.99
  6. Step 6: Final answer
    x = 479,681.48

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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.