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Finding the Fourth Proportional to 434,590.80, 651,011.40 and 301,621.20

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Solution

The fourth proportional to 434,590.80, 651,011.40 and 301,621.20 is: 451,824.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,590.80 : 651,011.40 = 301,621.20 : x
  2. Step 2: Convert to fraction form
    434,590.80/651,011.40 = 301,621.20/x
  3. Step 3: Cross multiply
    434,590.80x = 651,011.40 × 301,621.20
  4. Step 4: Simplify right side
    434,590.80x = 196,358,839,681.68
  5. Step 5: Solve for x
    x = 196,358,839,681.68/434,590.80
  6. Step 6: Final answer
    x = 451,824.66

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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.