Home / 631,864,836.45-871,968,716.01-353,406,373.65

Finding the Fourth Proportional to 631,864,836.45, 871,968,716.01 and 353,406,373.65

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Solution

The fourth proportional to 631,864,836.45, 871,968,716.01 and 353,406,373.65 is: 487,698,134.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,864,836.45 : 871,968,716.01 = 353,406,373.65 : x
  2. Step 2: Convert to fraction form
    631,864,836.45/871,968,716.01 = 353,406,373.65/x
  3. Step 3: Cross multiply
    631,864,836.45x = 871,968,716.01 × 353,406,373.65
  4. Step 4: Simplify right side
    631,864,836.45x = 308,159,301,861,340,800
  5. Step 5: Solve for x
    x = 308,159,301,861,340,800/631,864,836.45
  6. Step 6: Final answer
    x = 487,698,134.29

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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.