Home / 870,401.70-1,304,815.23-309,304.98

Finding the Fourth Proportional to 870,401.70, 1,304,815.23 and 309,304.98

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Solution

The fourth proportional to 870,401.70, 1,304,815.23 and 309,304.98 is: 463,677.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,401.70 : 1,304,815.23 = 309,304.98 : x
  2. Step 2: Convert to fraction form
    870,401.70/1,304,815.23 = 309,304.98/x
  3. Step 3: Cross multiply
    870,401.70x = 1,304,815.23 × 309,304.98
  4. Step 4: Simplify right side
    870,401.70x = 403,585,848,618.85
  5. Step 5: Solve for x
    x = 403,585,848,618.85/870,401.70
  6. Step 6: Final answer
    x = 463,677.69

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1.5x scale

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.