Home / 643,588,656.20-965,886,869.10-298,585,032.20

Finding the Fourth Proportional to 643,588,656.20, 965,886,869.10 and 298,585,032.20

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Solution

The fourth proportional to 643,588,656.20, 965,886,869.10 and 298,585,032.20 is: 448,111,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,588,656.20 : 965,886,869.10 = 298,585,032.20 : x
  2. Step 2: Convert to fraction form
    643,588,656.20/965,886,869.10 = 298,585,032.20/x
  3. Step 3: Cross multiply
    643,588,656.20x = 965,886,869.10 × 298,585,032.20
  4. Step 4: Simplify right side
    643,588,656.20x = 288,399,361,911,780,672
  5. Step 5: Solve for x
    x = 288,399,361,911,780,672/643,588,656.20
  6. Step 6: Final answer
    x = 448,111,319.45

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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.