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Finding the Fourth Proportional to 722,697.08, 997,329.98 and 400,412.25

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Solution

The fourth proportional to 722,697.08, 997,329.98 and 400,412.25 is: 552,573.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,697.08 : 997,329.98 = 400,412.25 : x
  2. Step 2: Convert to fraction form
    722,697.08/997,329.98 = 400,412.25/x
  3. Step 3: Cross multiply
    722,697.08x = 997,329.98 × 400,412.25
  4. Step 4: Simplify right side
    722,697.08x = 399,343,142,285.29
  5. Step 5: Solve for x
    x = 399,343,142,285.29/722,697.08
  6. Step 6: Final answer
    x = 552,573.35

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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.