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Finding the Fourth Proportional to 722,567.43, 997,143.07 and 400,298.40

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Solution

The fourth proportional to 722,567.43, 997,143.07 and 400,298.40 is: 552,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,567.43 : 997,143.07 = 400,298.40 : x
  2. Step 2: Convert to fraction form
    722,567.43/997,143.07 = 400,298.40/x
  3. Step 3: Cross multiply
    722,567.43x = 997,143.07 × 400,298.40
  4. Step 4: Simplify right side
    722,567.43x = 399,154,773,490.60
  5. Step 5: Solve for x
    x = 399,154,773,490.60/722,567.43
  6. Step 6: Final answer
    x = 552,411.80

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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.