Home / 660,722.04-990,929.06-323,424.68

Finding the Fourth Proportional to 660,722.04, 990,929.06 and 323,424.68

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Solution

The fourth proportional to 660,722.04, 990,929.06 and 323,424.68 is: 485,061.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,722.04 : 990,929.06 = 323,424.68 : x
  2. Step 2: Convert to fraction form
    660,722.04/990,929.06 = 323,424.68/x
  3. Step 3: Cross multiply
    660,722.04x = 990,929.06 × 323,424.68
  4. Step 4: Simplify right side
    660,722.04x = 320,490,914,133.20
  5. Step 5: Solve for x
    x = 320,490,914,133.20/660,722.04
  6. Step 6: Final answer
    x = 485,061.64

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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.