Home / 764,939,089.71-1,147,642,802.69-391,711,235.05

Finding the Fourth Proportional to 764,939,089.71, 1,147,642,802.69 and 391,711,235.05

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Solution

The fourth proportional to 764,939,089.71, 1,147,642,802.69 and 391,711,235.05 is: 587,686,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,939,089.71 : 1,147,642,802.69 = 391,711,235.05 : x
  2. Step 2: Convert to fraction form
    764,939,089.71/1,147,642,802.69 = 391,711,235.05/x
  3. Step 3: Cross multiply
    764,939,089.71x = 1,147,642,802.69 × 391,711,235.05
  4. Step 4: Simplify right side
    764,939,089.71x = 449,544,579,635,984,768
  5. Step 5: Solve for x
    x = 449,544,579,635,984,768/764,939,089.71
  6. Step 6: Final answer
    x = 587,686,765.77

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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.