Home / 948,658.15-1,309,179.48-518,928.45

Finding the Fourth Proportional to 948,658.15, 1,309,179.48 and 518,928.45

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Solution

The fourth proportional to 948,658.15, 1,309,179.48 and 518,928.45 is: 716,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,658.15 : 1,309,179.48 = 518,928.45 : x
  2. Step 2: Convert to fraction form
    948,658.15/1,309,179.48 = 518,928.45/x
  3. Step 3: Cross multiply
    948,658.15x = 1,309,179.48 × 518,928.45
  4. Step 4: Simplify right side
    948,658.15x = 679,370,478,328.21
  5. Step 5: Solve for x
    x = 679,370,478,328.21/948,658.15
  6. Step 6: Final answer
    x = 716,138.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.