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Finding the Fourth Proportional to 722,833.95, 997,580.84 and 400,648.35

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Solution

The fourth proportional to 722,833.95, 997,580.84 and 400,648.35 is: 552,933.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,833.95 : 997,580.84 = 400,648.35 : x
  2. Step 2: Convert to fraction form
    722,833.95/997,580.84 = 400,648.35/x
  3. Step 3: Cross multiply
    722,833.95x = 997,580.84 × 400,648.35
  4. Step 4: Simplify right side
    722,833.95x = 399,679,115,534.37
  5. Step 5: Solve for x
    x = 399,679,115,534.37/722,833.95
  6. Step 6: Final answer
    x = 552,933.51

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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.