Home / 643,588,643.20-965,886,849.60-298,585,019.20

Finding the Fourth Proportional to 643,588,643.20, 965,886,849.60 and 298,585,019.20

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Solution

The fourth proportional to 643,588,643.20, 965,886,849.60 and 298,585,019.20 is: 448,111,299.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,588,643.20 : 965,886,849.60 = 298,585,019.20 : x
  2. Step 2: Convert to fraction form
    643,588,643.20/965,886,849.60 = 298,585,019.20/x
  3. Step 3: Cross multiply
    643,588,643.20x = 965,886,849.60 × 298,585,019.20
  4. Step 4: Simplify right side
    643,588,643.20x = 288,399,343,532,843,520
  5. Step 5: Solve for x
    x = 288,399,343,532,843,520/643,588,643.20
  6. Step 6: Final answer
    x = 448,111,299.94

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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.