Home / 1,388,590.92-1,915,483.78-807,748.68

Finding the Fourth Proportional to 1,388,590.92, 1,915,483.78 and 807,748.68

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Solution

The fourth proportional to 1,388,590.92, 1,915,483.78 and 807,748.68 is: 1,114,244.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,590.92 : 1,915,483.78 = 807,748.68 : x
  2. Step 2: Convert to fraction form
    1,388,590.92/1,915,483.78 = 807,748.68/x
  3. Step 3: Cross multiply
    1,388,590.92x = 1,915,483.78 × 807,748.68
  4. Step 4: Simplify right side
    1,388,590.92x = 1,547,229,494,856.41
  5. Step 5: Solve for x
    x = 1,547,229,494,856.41/1,388,590.92
  6. Step 6: Final answer
    x = 1,114,244.28

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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.