Home / 722,988.60-997,724.34-400,719.48

Finding the Fourth Proportional to 722,988.60, 997,724.34 and 400,719.48

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Solution

The fourth proportional to 722,988.60, 997,724.34 and 400,719.48 is: 552,992.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,988.60 : 997,724.34 = 400,719.48 : x
  2. Step 2: Convert to fraction form
    722,988.60/997,724.34 = 400,719.48/x
  3. Step 3: Cross multiply
    722,988.60x = 997,724.34 × 400,719.48
  4. Step 4: Simplify right side
    722,988.60x = 399,807,578,708.14
  5. Step 5: Solve for x
    x = 399,807,578,708.14/722,988.60
  6. Step 6: Final answer
    x = 552,992.92

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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.