Home / 660,555,344.40-990,833,016.60-442,877,110.80

Finding the Fourth Proportional to 660,555,344.40, 990,833,016.60 and 442,877,110.80

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Solution

The fourth proportional to 660,555,344.40, 990,833,016.60 and 442,877,110.80 is: 664,315,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,555,344.40 : 990,833,016.60 = 442,877,110.80 : x
  2. Step 2: Convert to fraction form
    660,555,344.40/990,833,016.60 = 442,877,110.80/x
  3. Step 3: Cross multiply
    660,555,344.40x = 990,833,016.60 × 442,877,110.80
  4. Step 4: Simplify right side
    660,555,344.40x = 438,817,263,677,056,448
  5. Step 5: Solve for x
    x = 438,817,263,677,056,448/660,555,344.40
  6. Step 6: Final answer
    x = 664,315,666.20

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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.