Home / 660,456,429.40-990,684,644.10-272,079,346.60

Finding the Fourth Proportional to 660,456,429.40, 990,684,644.10 and 272,079,346.60

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Solution

The fourth proportional to 660,456,429.40, 990,684,644.10 and 272,079,346.60 is: 408,119,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,456,429.40 : 990,684,644.10 = 272,079,346.60 : x
  2. Step 2: Convert to fraction form
    660,456,429.40/990,684,644.10 = 272,079,346.60/x
  3. Step 3: Cross multiply
    660,456,429.40x = 990,684,644.10 × 272,079,346.60
  4. Step 4: Simplify right side
    660,456,429.40x = 269,544,830,653,381,568
  5. Step 5: Solve for x
    x = 269,544,830,653,381,568/660,456,429.40
  6. Step 6: Final answer
    x = 408,119,019.90

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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.