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Finding the Fourth Proportional to 434,530.40, 651,795.60 and 397,205.60

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Solution

The fourth proportional to 434,530.40, 651,795.60 and 397,205.60 is: 595,808.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,530.40 : 651,795.60 = 397,205.60 : x
  2. Step 2: Convert to fraction form
    434,530.40/651,795.60 = 397,205.60/x
  3. Step 3: Cross multiply
    434,530.40x = 651,795.60 × 397,205.60
  4. Step 4: Simplify right side
    434,530.40x = 258,896,862,375.36
  5. Step 5: Solve for x
    x = 258,896,862,375.36/434,530.40
  6. Step 6: Final answer
    x = 595,808.40

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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.