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Finding the Fourth Proportional to 490,655,426.40, 735,983,139.60 and 352,905,919.20

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Solution

The fourth proportional to 490,655,426.40, 735,983,139.60 and 352,905,919.20 is: 529,358,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,655,426.40 : 735,983,139.60 = 352,905,919.20 : x
  2. Step 2: Convert to fraction form
    490,655,426.40/735,983,139.60 = 352,905,919.20/x
  3. Step 3: Cross multiply
    490,655,426.40x = 735,983,139.60 × 352,905,919.20
  4. Step 4: Simplify right side
    490,655,426.40x = 259,732,806,396,239,904
  5. Step 5: Solve for x
    x = 259,732,806,396,239,904/490,655,426.40
  6. Step 6: Final answer
    x = 529,358,878.80

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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.