Home / 1,323,129.78-1,984,160.40-513,087.68

Finding the Fourth Proportional to 1,323,129.78, 1,984,160.40 and 513,087.68

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Solution

The fourth proportional to 1,323,129.78, 1,984,160.40 and 513,087.68 is: 769,424.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323,129.78 : 1,984,160.40 = 513,087.68 : x
  2. Step 2: Convert to fraction form
    1,323,129.78/1,984,160.40 = 513,087.68/x
  3. Step 3: Cross multiply
    1,323,129.78x = 1,984,160.40 × 513,087.68
  4. Step 4: Simplify right side
    1,323,129.78x = 1,018,048,246,463.07
  5. Step 5: Solve for x
    x = 1,018,048,246,463.07/1,323,129.78
  6. Step 6: Final answer
    x = 769,424.33

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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.