Home / 1,287,872.46-1,931,808.69-446,424.21

Finding the Fourth Proportional to 1,287,872.46, 1,931,808.69 and 446,424.21

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Solution

The fourth proportional to 1,287,872.46, 1,931,808.69 and 446,424.21 is: 669,636.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,872.46 : 1,931,808.69 = 446,424.21 : x
  2. Step 2: Convert to fraction form
    1,287,872.46/1,931,808.69 = 446,424.21/x
  3. Step 3: Cross multiply
    1,287,872.46x = 1,931,808.69 × 446,424.21
  4. Step 4: Simplify right side
    1,287,872.46x = 862,406,168,304.39
  5. Step 5: Solve for x
    x = 862,406,168,304.39/1,287,872.46
  6. Step 6: Final answer
    x = 669,636.32

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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.