Home / 643,597,117.20-965,899,560.60-298,593,493.20

Finding the Fourth Proportional to 643,597,117.20, 965,899,560.60 and 298,593,493.20

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Solution

The fourth proportional to 643,597,117.20, 965,899,560.60 and 298,593,493.20 is: 448,124,014.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,597,117.20 : 965,899,560.60 = 298,593,493.20 : x
  2. Step 2: Convert to fraction form
    643,597,117.20/965,899,560.60 = 298,593,493.20/x
  3. Step 3: Cross multiply
    643,597,117.20x = 965,899,560.60 × 298,593,493.20
  4. Step 4: Simplify right side
    643,597,117.20x = 288,411,323,879,899,072
  5. Step 5: Solve for x
    x = 288,411,323,879,899,072/643,597,117.20
  6. Step 6: Final answer
    x = 448,124,014.50

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Double scale
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1.5x scale

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.