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Finding the Fourth Proportional to 722,598.30, 997,246.89 and 400,409.46

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Solution

The fourth proportional to 722,598.30, 997,246.89 and 400,409.46 is: 552,598.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,598.30 : 997,246.89 = 400,409.46 : x
  2. Step 2: Convert to fraction form
    722,598.30/997,246.89 = 400,409.46/x
  3. Step 3: Cross multiply
    722,598.30x = 997,246.89 × 400,409.46
  4. Step 4: Simplify right side
    722,598.30x = 399,307,088,711.58
  5. Step 5: Solve for x
    x = 399,307,088,711.58/722,598.30
  6. Step 6: Final answer
    x = 552,598.99

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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.