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Finding the Fourth Proportional to 663,211,931.60, 992,904,709.80 and 663,211,931.60

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Solution

The fourth proportional to 663,211,931.60, 992,904,709.80 and 663,211,931.60 is: 992,904,709.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,211,931.60 : 992,904,709.80 = 663,211,931.60 : x
  2. Step 2: Convert to fraction form
    663,211,931.60/992,904,709.80 = 663,211,931.60/x
  3. Step 3: Cross multiply
    663,211,931.60x = 992,904,709.80 × 663,211,931.60
  4. Step 4: Simplify right side
    663,211,931.60x = 658,506,250,481,195,392
  5. Step 5: Solve for x
    x = 658,506,250,481,195,392/663,211,931.60
  6. Step 6: Final answer
    x = 992,904,709.80

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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.