Home / 1,386,622.08-1,913,627.70-813,453.12

Finding the Fourth Proportional to 1,386,622.08, 1,913,627.70 and 813,453.12

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Solution

The fourth proportional to 1,386,622.08, 1,913,627.70 and 813,453.12 is: 1,122,617.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,622.08 : 1,913,627.70 = 813,453.12 : x
  2. Step 2: Convert to fraction form
    1,386,622.08/1,913,627.70 = 813,453.12/x
  3. Step 3: Cross multiply
    1,386,622.08x = 1,913,627.70 × 813,453.12
  4. Step 4: Simplify right side
    1,386,622.08x = 1,556,646,423,083.42
  5. Step 5: Solve for x
    x = 1,556,646,423,083.42/1,386,622.08
  6. Step 6: Final answer
    x = 1,122,617.65

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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.