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Finding the Fourth Proportional to 722,856.17, 997,547.42 and 400,571.65

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Solution

The fourth proportional to 722,856.17, 997,547.42 and 400,571.65 is: 552,792.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,856.17 : 997,547.42 = 400,571.65 : x
  2. Step 2: Convert to fraction form
    722,856.17/997,547.42 = 400,571.65/x
  3. Step 3: Cross multiply
    722,856.17x = 997,547.42 × 400,571.65
  4. Step 4: Simplify right side
    722,856.17x = 399,589,215,982.64
  5. Step 5: Solve for x
    x = 399,589,215,982.64/722,856.17
  6. Step 6: Final answer
    x = 552,792.15

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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.