Home / 728,960.07-1,005,961.77-406,670.40

Finding the Fourth Proportional to 728,960.07, 1,005,961.77 and 406,670.40

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Solution

The fourth proportional to 728,960.07, 1,005,961.77 and 406,670.40 is: 561,203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,960.07 : 1,005,961.77 = 406,670.40 : x
  2. Step 2: Convert to fraction form
    728,960.07/1,005,961.77 = 406,670.40/x
  3. Step 3: Cross multiply
    728,960.07x = 1,005,961.77 × 406,670.40
  4. Step 4: Simplify right side
    728,960.07x = 409,094,875,390.61
  5. Step 5: Solve for x
    x = 409,094,875,390.61/728,960.07
  6. Step 6: Final answer
    x = 561,203.41

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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.