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Finding the Fourth Proportional to 618,483.60, 867,121.20 and 618,483.60

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Solution

The fourth proportional to 618,483.60, 867,121.20 and 618,483.60 is: 867,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,483.60 : 867,121.20 = 618,483.60 : x
  2. Step 2: Convert to fraction form
    618,483.60/867,121.20 = 618,483.60/x
  3. Step 3: Cross multiply
    618,483.60x = 867,121.20 × 618,483.60
  4. Step 4: Simplify right side
    618,483.60x = 536,300,241,412.32
  5. Step 5: Solve for x
    x = 536,300,241,412.32/618,483.60
  6. Step 6: Final answer
    x = 867,121.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.