Home / 728,567.46-1,005,429.63-401,892.97

Finding the Fourth Proportional to 728,567.46, 1,005,429.63 and 401,892.97

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Solution

The fourth proportional to 728,567.46, 1,005,429.63 and 401,892.97 is: 554,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,567.46 : 1,005,429.63 = 401,892.97 : x
  2. Step 2: Convert to fraction form
    728,567.46/1,005,429.63 = 401,892.97/x
  3. Step 3: Cross multiply
    728,567.46x = 1,005,429.63 × 401,892.97
  4. Step 4: Simplify right side
    728,567.46x = 404,075,100,126.70
  5. Step 5: Solve for x
    x = 404,075,100,126.70/728,567.46
  6. Step 6: Final answer
    x = 554,615.90

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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.