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Finding the Fourth Proportional to 412,455.40, 618,683.10 and 412,455.40

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Solution

The fourth proportional to 412,455.40, 618,683.10 and 412,455.40 is: 618,683.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,455.40 : 618,683.10 = 412,455.40 : x
  2. Step 2: Convert to fraction form
    412,455.40/618,683.10 = 412,455.40/x
  3. Step 3: Cross multiply
    412,455.40x = 618,683.10 × 412,455.40
  4. Step 4: Simplify right side
    412,455.40x = 255,179,185,483.74
  5. Step 5: Solve for x
    x = 255,179,185,483.74/412,455.40
  6. Step 6: Final answer
    x = 618,683.10

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1.5x scale

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.