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Finding the Fourth Proportional to 704,994,355.76, 972,849,562.12 and 391,717,857.84

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Solution

The fourth proportional to 704,994,355.76, 972,849,562.12 and 391,717,857.84 is: 540,546,946.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,994,355.76 : 972,849,562.12 = 391,717,857.84 : x
  2. Step 2: Convert to fraction form
    704,994,355.76/972,849,562.12 = 391,717,857.84/x
  3. Step 3: Cross multiply
    704,994,355.76x = 972,849,562.12 × 391,717,857.84
  4. Step 4: Simplify right side
    704,994,355.76x = 381,082,546,474,228,416
  5. Step 5: Solve for x
    x = 381,082,546,474,228,416/704,994,355.76
  6. Step 6: Final answer
    x = 540,546,946.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.