Home / 638,645.31-958,632.27-470,355.66

Finding the Fourth Proportional to 638,645.31, 958,632.27 and 470,355.66

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Solution

The fourth proportional to 638,645.31, 958,632.27 and 470,355.66 is: 706,022.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,645.31 : 958,632.27 = 470,355.66 : x
  2. Step 2: Convert to fraction form
    638,645.31/958,632.27 = 470,355.66/x
  3. Step 3: Cross multiply
    638,645.31x = 958,632.27 × 470,355.66
  4. Step 4: Simplify right side
    638,645.31x = 450,898,112,289.31
  5. Step 5: Solve for x
    x = 450,898,112,289.31/638,645.31
  6. Step 6: Final answer
    x = 706,022.74

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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.