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Finding the Fourth Proportional to 722,820.68, 997,532.34 and 400,523.72

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Solution

The fourth proportional to 722,820.68, 997,532.34 and 400,523.72 is: 552,744.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,820.68 : 997,532.34 = 400,523.72 : x
  2. Step 2: Convert to fraction form
    722,820.68/997,532.34 = 400,523.72/x
  3. Step 3: Cross multiply
    722,820.68x = 997,532.34 × 400,523.72
  4. Step 4: Simplify right side
    722,820.68x = 399,535,363,637.11
  5. Step 5: Solve for x
    x = 399,535,363,637.11/722,820.68
  6. Step 6: Final answer
    x = 552,744.79

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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.