Home / 728,114.21-1,004,802.28-405,844.74

Finding the Fourth Proportional to 728,114.21, 1,004,802.28 and 405,844.74

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Solution

The fourth proportional to 728,114.21, 1,004,802.28 and 405,844.74 is: 560,068.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,114.21 : 1,004,802.28 = 405,844.74 : x
  2. Step 2: Convert to fraction form
    728,114.21/1,004,802.28 = 405,844.74/x
  3. Step 3: Cross multiply
    728,114.21x = 1,004,802.28 × 405,844.74
  4. Step 4: Simplify right side
    728,114.21x = 407,793,722,831.40
  5. Step 5: Solve for x
    x = 407,793,722,831.40/728,114.21
  6. Step 6: Final answer
    x = 560,068.35

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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.