Home / 1,242,002.70-1,863,004.05-389,145.60

Finding the Fourth Proportional to 1,242,002.70, 1,863,004.05 and 389,145.60

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Solution

The fourth proportional to 1,242,002.70, 1,863,004.05 and 389,145.60 is: 583,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,002.70 : 1,863,004.05 = 389,145.60 : x
  2. Step 2: Convert to fraction form
    1,242,002.70/1,863,004.05 = 389,145.60/x
  3. Step 3: Cross multiply
    1,242,002.70x = 1,863,004.05 × 389,145.60
  4. Step 4: Simplify right side
    1,242,002.70x = 724,979,828,839.68
  5. Step 5: Solve for x
    x = 724,979,828,839.68/1,242,002.70
  6. Step 6: Final answer
    x = 583,718.40

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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.