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Finding the Fourth Proportional to 722,681.39, 997,256.93 and 400,368.17

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Solution

The fourth proportional to 722,681.39, 997,256.93 and 400,368.17 is: 552,484.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,681.39 : 997,256.93 = 400,368.17 : x
  2. Step 2: Convert to fraction form
    722,681.39/997,256.93 = 400,368.17/x
  3. Step 3: Cross multiply
    722,681.39x = 997,256.93 × 400,368.17
  4. Step 4: Simplify right side
    722,681.39x = 399,269,932,083.92
  5. Step 5: Solve for x
    x = 399,269,932,083.92/722,681.39
  6. Step 6: Final answer
    x = 552,484.04

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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.