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Finding the Fourth Proportional to 434,730.20, 609,728.20 and 434,730.20

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Solution

The fourth proportional to 434,730.20, 609,728.20 and 434,730.20 is: 609,728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,730.20 : 609,728.20 = 434,730.20 : x
  2. Step 2: Convert to fraction form
    434,730.20/609,728.20 = 434,730.20/x
  3. Step 3: Cross multiply
    434,730.20x = 609,728.20 × 434,730.20
  4. Step 4: Simplify right side
    434,730.20x = 265,067,262,331.64
  5. Step 5: Solve for x
    x = 265,067,262,331.64/434,730.20
  6. Step 6: Final answer
    x = 609,728.20

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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.