Home / 722,536.40-997,087.72-400,239.72

Finding the Fourth Proportional to 722,536.40, 997,087.72 and 400,239.72

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Solution

The fourth proportional to 722,536.40, 997,087.72 and 400,239.72 is: 552,323.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,536.40 : 997,087.72 = 400,239.72 : x
  2. Step 2: Convert to fraction form
    722,536.40/997,087.72 = 400,239.72/x
  3. Step 3: Cross multiply
    722,536.40x = 997,087.72 × 400,239.72
  4. Step 4: Simplify right side
    722,536.40x = 399,074,109,868.24
  5. Step 5: Solve for x
    x = 399,074,109,868.24/722,536.40
  6. Step 6: Final answer
    x = 552,323.88

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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.