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Finding the Fourth Proportional to 400,970.42, 601,455.40 and 374,398.40

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Solution

The fourth proportional to 400,970.42, 601,455.40 and 374,398.40 is: 561,597.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,970.42 : 601,455.40 = 374,398.40 : x
  2. Step 2: Convert to fraction form
    400,970.42/601,455.40 = 374,398.40/x
  3. Step 3: Cross multiply
    400,970.42x = 601,455.40 × 374,398.40
  4. Step 4: Simplify right side
    400,970.42x = 225,183,939,431.36
  5. Step 5: Solve for x
    x = 225,183,939,431.36/400,970.42
  6. Step 6: Final answer
    x = 561,597.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.