Home / 728,678.16-1,005,310.84-422,585.64

Finding the Fourth Proportional to 728,678.16, 1,005,310.84 and 422,585.64

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Solution

The fourth proportional to 728,678.16, 1,005,310.84 and 422,585.64 is: 583,014.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,678.16 : 1,005,310.84 = 422,585.64 : x
  2. Step 2: Convert to fraction form
    728,678.16/1,005,310.84 = 422,585.64/x
  3. Step 3: Cross multiply
    728,678.16x = 1,005,310.84 × 422,585.64
  4. Step 4: Simplify right side
    728,678.16x = 424,829,924,720.34
  5. Step 5: Solve for x
    x = 424,829,924,720.34/728,678.16
  6. Step 6: Final answer
    x = 583,014.49

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1.5x scale

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.