Home / 1,388,864.72-2,082,607.88-442,112.40

Finding the Fourth Proportional to 1,388,864.72, 2,082,607.88 and 442,112.40

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Solution

The fourth proportional to 1,388,864.72, 2,082,607.88 and 442,112.40 is: 662,949.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,864.72 : 2,082,607.88 = 442,112.40 : x
  2. Step 2: Convert to fraction form
    1,388,864.72/2,082,607.88 = 442,112.40/x
  3. Step 3: Cross multiply
    1,388,864.72x = 2,082,607.88 × 442,112.40
  4. Step 4: Simplify right side
    1,388,864.72x = 920,746,768,085.71
  5. Step 5: Solve for x
    x = 920,746,768,085.71/1,388,864.72
  6. Step 6: Final answer
    x = 662,949.21

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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.