Home / 434,456.80-651,685.20-256,872.40

Finding the Fourth Proportional to 434,456.80, 651,685.20 and 256,872.40

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Solution

The fourth proportional to 434,456.80, 651,685.20 and 256,872.40 is: 385,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,456.80 : 651,685.20 = 256,872.40 : x
  2. Step 2: Convert to fraction form
    434,456.80/651,685.20 = 256,872.40/x
  3. Step 3: Cross multiply
    434,456.80x = 651,685.20 × 256,872.40
  4. Step 4: Simplify right side
    434,456.80x = 167,399,941,368.48
  5. Step 5: Solve for x
    x = 167,399,941,368.48/434,456.80
  6. Step 6: Final answer
    x = 385,308.60

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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.