Home / 628,399.20-942,598.80-488,258.40

Finding the Fourth Proportional to 628,399.20, 942,598.80 and 488,258.40

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Solution

The fourth proportional to 628,399.20, 942,598.80 and 488,258.40 is: 732,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,399.20 : 942,598.80 = 488,258.40 : x
  2. Step 2: Convert to fraction form
    628,399.20/942,598.80 = 488,258.40/x
  3. Step 3: Cross multiply
    628,399.20x = 942,598.80 × 488,258.40
  4. Step 4: Simplify right side
    628,399.20x = 460,231,781,929.92
  5. Step 5: Solve for x
    x = 460,231,781,929.92/628,399.20
  6. Step 6: Final answer
    x = 732,387.60

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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.