Home / 628,389-942,569.46-155,078.46

Finding the Fourth Proportional to 628,389, 942,569.46 and 155,078.46

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Solution

The fourth proportional to 628,389, 942,569.46 and 155,078.46 is: 232,614.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,389 : 942,569.46 = 155,078.46 : x
  2. Step 2: Convert to fraction form
    628,389/942,569.46 = 155,078.46/x
  3. Step 3: Cross multiply
    628,389x = 942,569.46 × 155,078.46
  4. Step 4: Simplify right side
    628,389x = 146,172,220,299.83
  5. Step 5: Solve for x
    x = 146,172,220,299.83/628,389
  6. Step 6: Final answer
    x = 232,614.23

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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.