Home / 638,913.80-958,370.70-470,952.20

Finding the Fourth Proportional to 638,913.80, 958,370.70 and 470,952.20

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Solution

The fourth proportional to 638,913.80, 958,370.70 and 470,952.20 is: 706,428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,913.80 : 958,370.70 = 470,952.20 : x
  2. Step 2: Convert to fraction form
    638,913.80/958,370.70 = 470,952.20/x
  3. Step 3: Cross multiply
    638,913.80x = 958,370.70 × 470,952.20
  4. Step 4: Simplify right side
    638,913.80x = 451,346,789,580.54
  5. Step 5: Solve for x
    x = 451,346,789,580.54/638,913.80
  6. Step 6: Final answer
    x = 706,428.30

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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.