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Finding the Fourth Proportional to 722,757.66, 997,390.86 and 400,466.76

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Solution

The fourth proportional to 722,757.66, 997,390.86 and 400,466.76 is: 552,635.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,757.66 : 997,390.86 = 400,466.76 : x
  2. Step 2: Convert to fraction form
    722,757.66/997,390.86 = 400,466.76/x
  3. Step 3: Cross multiply
    722,757.66x = 997,390.86 × 400,466.76
  4. Step 4: Simplify right side
    722,757.66x = 399,421,886,157.81
  5. Step 5: Solve for x
    x = 399,421,886,157.81/722,757.66
  6. Step 6: Final answer
    x = 552,635.98

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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.