Home / 998,957.76-1,498,428.41-430,740.51

Finding the Fourth Proportional to 998,957.76, 1,498,428.41 and 430,740.51

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Solution

The fourth proportional to 998,957.76, 1,498,428.41 and 430,740.51 is: 646,107.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,957.76 : 1,498,428.41 = 430,740.51 : x
  2. Step 2: Convert to fraction form
    998,957.76/1,498,428.41 = 430,740.51/x
  3. Step 3: Cross multiply
    998,957.76x = 1,498,428.41 × 430,740.51
  4. Step 4: Simplify right side
    998,957.76x = 645,433,815,368.19
  5. Step 5: Solve for x
    x = 645,433,815,368.19/998,957.76
  6. Step 6: Final answer
    x = 646,107.21

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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.