Home / 722,977.42-997,708.93-400,708.32

Finding the Fourth Proportional to 722,977.42, 997,708.93 and 400,708.32

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Solution

The fourth proportional to 722,977.42, 997,708.93 and 400,708.32 is: 552,977.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,977.42 : 997,708.93 = 400,708.32 : x
  2. Step 2: Convert to fraction form
    722,977.42/997,708.93 = 400,708.32/x
  3. Step 3: Cross multiply
    722,977.42x = 997,708.93 × 400,708.32
  4. Step 4: Simplify right side
    722,977.42x = 399,790,262,197.21
  5. Step 5: Solve for x
    x = 399,790,262,197.21/722,977.42
  6. Step 6: Final answer
    x = 552,977.53

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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.