Home / 842,543.60-1,263,815.40-742,816.40

Finding the Fourth Proportional to 842,543.60, 1,263,815.40 and 742,816.40

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Solution

The fourth proportional to 842,543.60, 1,263,815.40 and 742,816.40 is: 1,114,224.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,543.60 : 1,263,815.40 = 742,816.40 : x
  2. Step 2: Convert to fraction form
    842,543.60/1,263,815.40 = 742,816.40/x
  3. Step 3: Cross multiply
    842,543.60x = 1,263,815.40 × 742,816.40
  4. Step 4: Simplify right side
    842,543.60x = 938,782,805,692.56
  5. Step 5: Solve for x
    x = 938,782,805,692.56/842,543.60
  6. Step 6: Final answer
    x = 1,114,224.60

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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.