Home / 728,893.89-1,005,875.03-406,595.61

Finding the Fourth Proportional to 728,893.89, 1,005,875.03 and 406,595.61

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Solution

The fourth proportional to 728,893.89, 1,005,875.03 and 406,595.61 is: 561,102.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,893.89 : 1,005,875.03 = 406,595.61 : x
  2. Step 2: Convert to fraction form
    728,893.89/1,005,875.03 = 406,595.61/x
  3. Step 3: Cross multiply
    728,893.89x = 1,005,875.03 × 406,595.61
  4. Step 4: Simplify right side
    728,893.89x = 408,984,369,373.64
  5. Step 5: Solve for x
    x = 408,984,369,373.64/728,893.89
  6. Step 6: Final answer
    x = 561,102.75

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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.