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Finding the Fourth Proportional to 553,207,819.20, 829,811,728.80 and 521,463,076.80

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Solution

The fourth proportional to 553,207,819.20, 829,811,728.80 and 521,463,076.80 is: 782,194,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,207,819.20 : 829,811,728.80 = 521,463,076.80 : x
  2. Step 2: Convert to fraction form
    553,207,819.20/829,811,728.80 = 521,463,076.80/x
  3. Step 3: Cross multiply
    553,207,819.20x = 829,811,728.80 × 521,463,076.80
  4. Step 4: Simplify right side
    553,207,819.20x = 432,716,177,264,775,168
  5. Step 5: Solve for x
    x = 432,716,177,264,775,168/553,207,819.20
  6. Step 6: Final answer
    x = 782,194,615.20

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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.