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Finding the Fourth Proportional to 722,632.39, 997,240.71 and 400,347.56

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Solution

The fourth proportional to 722,632.39, 997,240.71 and 400,347.56 is: 552,484.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,632.39 : 997,240.71 = 400,347.56 : x
  2. Step 2: Convert to fraction form
    722,632.39/997,240.71 = 400,347.56/x
  3. Step 3: Cross multiply
    722,632.39x = 997,240.71 × 400,347.56
  4. Step 4: Simplify right side
    722,632.39x = 399,242,888,975.57
  5. Step 5: Solve for x
    x = 399,242,888,975.57/722,632.39
  6. Step 6: Final answer
    x = 552,484.08

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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.