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Finding the Fourth Proportional to 722,883.90, 997,585.65 and 400,599.30

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Solution

The fourth proportional to 722,883.90, 997,585.65 and 400,599.30 is: 552,830.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,883.90 : 997,585.65 = 400,599.30 : x
  2. Step 2: Convert to fraction form
    722,883.90/997,585.65 = 400,599.30/x
  3. Step 3: Cross multiply
    722,883.90x = 997,585.65 × 400,599.30
  4. Step 4: Simplify right side
    722,883.90x = 399,632,113,080.05
  5. Step 5: Solve for x
    x = 399,632,113,080.05/722,883.90
  6. Step 6: Final answer
    x = 552,830.29

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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.