Home / 420,697,121.80-633,917,248.04-345,700,167.88

Finding the Fourth Proportional to 420,697,121.80, 633,917,248.04 and 345,700,167.88

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Solution

The fourth proportional to 420,697,121.80, 633,917,248.04 and 345,700,167.88 is: 520,909,908.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,697,121.80 : 633,917,248.04 = 345,700,167.88 : x
  2. Step 2: Convert to fraction form
    420,697,121.80/633,917,248.04 = 345,700,167.88/x
  3. Step 3: Cross multiply
    420,697,121.80x = 633,917,248.04 × 345,700,167.88
  4. Step 4: Simplify right side
    420,697,121.80x = 219,145,299,069,455,584
  5. Step 5: Solve for x
    x = 219,145,299,069,455,584/420,697,121.80
  6. Step 6: Final answer
    x = 520,909,908.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.