Home / 729,718.28-1,007,001.69-407,433.86

Finding the Fourth Proportional to 729,718.28, 1,007,001.69 and 407,433.86

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Solution

The fourth proportional to 729,718.28, 1,007,001.69 and 407,433.86 is: 562,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,718.28 : 1,007,001.69 = 407,433.86 : x
  2. Step 2: Convert to fraction form
    729,718.28/1,007,001.69 = 407,433.86/x
  3. Step 3: Cross multiply
    729,718.28x = 1,007,001.69 × 407,433.86
  4. Step 4: Simplify right side
    729,718.28x = 410,286,585,583.22
  5. Step 5: Solve for x
    x = 410,286,585,583.22/729,718.28
  6. Step 6: Final answer
    x = 562,253.40

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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.