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Finding the Fourth Proportional to 509,901.49, 703,665.46 and 280,482.29

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Solution

The fourth proportional to 509,901.49, 703,665.46 and 280,482.29 is: 387,066.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,901.49 : 703,665.46 = 280,482.29 : x
  2. Step 2: Convert to fraction form
    509,901.49/703,665.46 = 280,482.29/x
  3. Step 3: Cross multiply
    509,901.49x = 703,665.46 × 280,482.29
  4. Step 4: Simplify right side
    509,901.49x = 197,365,699,874.58
  5. Step 5: Solve for x
    x = 197,365,699,874.58/509,901.49
  6. Step 6: Final answer
    x = 387,066.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.