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Finding the Fourth Proportional to 518,224.60, 775,581.12 and 318,671.36

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Solution

The fourth proportional to 518,224.60, 775,581.12 and 318,671.36 is: 476,927.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,224.60 : 775,581.12 = 318,671.36 : x
  2. Step 2: Convert to fraction form
    518,224.60/775,581.12 = 318,671.36/x
  3. Step 3: Cross multiply
    518,224.60x = 775,581.12 × 318,671.36
  4. Step 4: Simplify right side
    518,224.60x = 247,155,490,300.72
  5. Step 5: Solve for x
    x = 247,155,490,300.72/518,224.60
  6. Step 6: Final answer
    x = 476,927.36

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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.