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Finding the Fourth Proportional to 722,968.57, 997,696.72 and 400,699.47

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Solution

The fourth proportional to 722,968.57, 997,696.72 and 400,699.47 is: 552,965.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,968.57 : 997,696.72 = 400,699.47 : x
  2. Step 2: Convert to fraction form
    722,968.57/997,696.72 = 400,699.47/x
  3. Step 3: Cross multiply
    722,968.57x = 997,696.72 × 400,699.47
  4. Step 4: Simplify right side
    722,968.57x = 399,776,547,921.42
  5. Step 5: Solve for x
    x = 399,776,547,921.42/722,968.57
  6. Step 6: Final answer
    x = 552,965.32

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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.