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Finding the Fourth Proportional to 1,212,762.40, 1,819,143.60 and 834,848.80

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Solution

The fourth proportional to 1,212,762.40, 1,819,143.60 and 834,848.80 is: 1,252,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,762.40 : 1,819,143.60 = 834,848.80 : x
  2. Step 2: Convert to fraction form
    1,212,762.40/1,819,143.60 = 834,848.80/x
  3. Step 3: Cross multiply
    1,212,762.40x = 1,819,143.60 × 834,848.80
  4. Step 4: Simplify right side
    1,212,762.40x = 1,518,709,851,487.68
  5. Step 5: Solve for x
    x = 1,518,709,851,487.68/1,212,762.40
  6. Step 6: Final answer
    x = 1,252,273.20

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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.