Home / 728,916.34-1,005,901.77-406,626.18

Finding the Fourth Proportional to 728,916.34, 1,005,901.77 and 406,626.18

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Solution

The fourth proportional to 728,916.34, 1,005,901.77 and 406,626.18 is: 561,142.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,916.34 : 1,005,901.77 = 406,626.18 : x
  2. Step 2: Convert to fraction form
    728,916.34/1,005,901.77 = 406,626.18/x
  3. Step 3: Cross multiply
    728,916.34x = 1,005,901.77 × 406,626.18
  4. Step 4: Simplify right side
    728,916.34x = 409,025,988,512.15
  5. Step 5: Solve for x
    x = 409,025,988,512.15/728,916.34
  6. Step 6: Final answer
    x = 561,142.57

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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.