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Finding the Fourth Proportional to 472,392,608.80, 708,588,913.20 and 298,930,266.40

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Solution

The fourth proportional to 472,392,608.80, 708,588,913.20 and 298,930,266.40 is: 448,395,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,608.80 : 708,588,913.20 = 298,930,266.40 : x
  2. Step 2: Convert to fraction form
    472,392,608.80/708,588,913.20 = 298,930,266.40/x
  3. Step 3: Cross multiply
    472,392,608.80x = 708,588,913.20 × 298,930,266.40
  4. Step 4: Simplify right side
    472,392,608.80x = 211,818,672,590,962,464
  5. Step 5: Solve for x
    x = 211,818,672,590,962,464/472,392,608.80
  6. Step 6: Final answer
    x = 448,395,399.60

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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.