Home / 1,317,904,141.68-1,976,971,106.31-432,323,981.28

Finding the Fourth Proportional to 1,317,904,141.68, 1,976,971,106.31 and 432,323,981.28

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Solution

The fourth proportional to 1,317,904,141.68, 1,976,971,106.31 and 432,323,981.28 is: 648,523,661.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,904,141.68 : 1,976,971,106.31 = 432,323,981.28 : x
  2. Step 2: Convert to fraction form
    1,317,904,141.68/1,976,971,106.31 = 432,323,981.28/x
  3. Step 3: Cross multiply
    1,317,904,141.68x = 1,976,971,106.31 × 432,323,981.28
  4. Step 4: Simplify right side
    1,317,904,141.68x = 854,692,019,555,465,216
  5. Step 5: Solve for x
    x = 854,692,019,555,465,216/1,317,904,141.68
  6. Step 6: Final answer
    x = 648,523,661.57

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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.