Home / 1,317,621,838.38-1,976,363,148.71-432,190,565.72

Finding the Fourth Proportional to 1,317,621,838.38, 1,976,363,148.71 and 432,190,565.72

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Solution

The fourth proportional to 1,317,621,838.38, 1,976,363,148.71 and 432,190,565.72 is: 648,263,016.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,621,838.38 : 1,976,363,148.71 = 432,190,565.72 : x
  2. Step 2: Convert to fraction form
    1,317,621,838.38/1,976,363,148.71 = 432,190,565.72/x
  3. Step 3: Cross multiply
    1,317,621,838.38x = 1,976,363,148.71 × 432,190,565.72
  4. Step 4: Simplify right side
    1,317,621,838.38x = 854,165,507,297,092,480
  5. Step 5: Solve for x
    x = 854,165,507,297,092,480/1,317,621,838.38
  6. Step 6: Final answer
    x = 648,263,016.30

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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.