Home / 1,247,988.38-1,870,834.40-678,537.32

Finding the Fourth Proportional to 1,247,988.38, 1,870,834.40 and 678,537.32

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Solution

The fourth proportional to 1,247,988.38, 1,870,834.40 and 678,537.32 is: 1,017,181.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,988.38 : 1,870,834.40 = 678,537.32 : x
  2. Step 2: Convert to fraction form
    1,247,988.38/1,870,834.40 = 678,537.32/x
  3. Step 3: Cross multiply
    1,247,988.38x = 1,870,834.40 × 678,537.32
  4. Step 4: Simplify right side
    1,247,988.38x = 1,269,430,956,547.12
  5. Step 5: Solve for x
    x = 1,269,430,956,547.12/1,247,988.38
  6. Step 6: Final answer
    x = 1,017,181.71

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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.