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Finding the Fourth Proportional to 434,203.20, 651,304.80 and 403,790.40

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Solution

The fourth proportional to 434,203.20, 651,304.80 and 403,790.40 is: 605,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,203.20 : 651,304.80 = 403,790.40 : x
  2. Step 2: Convert to fraction form
    434,203.20/651,304.80 = 403,790.40/x
  3. Step 3: Cross multiply
    434,203.20x = 651,304.80 × 403,790.40
  4. Step 4: Simplify right side
    434,203.20x = 262,990,625,713.92
  5. Step 5: Solve for x
    x = 262,990,625,713.92/434,203.20
  6. Step 6: Final answer
    x = 605,685.60

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1.5x scale

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.