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Finding the Fourth Proportional to 722,549.52, 997,118.40 and 400,280.52

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Solution

The fourth proportional to 722,549.52, 997,118.40 and 400,280.52 is: 552,387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,549.52 : 997,118.40 = 400,280.52 : x
  2. Step 2: Convert to fraction form
    722,549.52/997,118.40 = 400,280.52/x
  3. Step 3: Cross multiply
    722,549.52x = 997,118.40 × 400,280.52
  4. Step 4: Simplify right side
    722,549.52x = 399,127,071,653.57
  5. Step 5: Solve for x
    x = 399,127,071,653.57/722,549.52
  6. Step 6: Final answer
    x = 552,387.15

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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.