Home / 765,411,740.79-1,147,184,866.62-396,743,442.72

Finding the Fourth Proportional to 765,411,740.79, 1,147,184,866.62 and 396,743,442.72

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Solution

The fourth proportional to 765,411,740.79, 1,147,184,866.62 and 396,743,442.72 is: 594,631,685.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,411,740.79 : 1,147,184,866.62 = 396,743,442.72 : x
  2. Step 2: Convert to fraction form
    765,411,740.79/1,147,184,866.62 = 396,743,442.72/x
  3. Step 3: Cross multiply
    765,411,740.79x = 1,147,184,866.62 × 396,743,442.72
  4. Step 4: Simplify right side
    765,411,740.79x = 455,138,073,419,102,784
  5. Step 5: Solve for x
    x = 455,138,073,419,102,784/765,411,740.79
  6. Step 6: Final answer
    x = 594,631,685.36

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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.