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Finding the Fourth Proportional to 434,827.20, 609,864 and 434,827.20

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Solution

The fourth proportional to 434,827.20, 609,864 and 434,827.20 is: 609,864

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,827.20 : 609,864 = 434,827.20 : x
  2. Step 2: Convert to fraction form
    434,827.20/609,864 = 434,827.20/x
  3. Step 3: Cross multiply
    434,827.20x = 609,864 × 434,827.20
  4. Step 4: Simplify right side
    434,827.20x = 265,185,455,500.80
  5. Step 5: Solve for x
    x = 265,185,455,500.80/434,827.20
  6. Step 6: Final answer
    x = 609,864

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.