Home / 1,128,967.45-1,557,774.10-638,934.67

Finding the Fourth Proportional to 1,128,967.45, 1,557,774.10 and 638,934.67

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Solution

The fourth proportional to 1,128,967.45, 1,557,774.10 and 638,934.67 is: 881,616.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,967.45 : 1,557,774.10 = 638,934.67 : x
  2. Step 2: Convert to fraction form
    1,128,967.45/1,557,774.10 = 638,934.67/x
  3. Step 3: Cross multiply
    1,128,967.45x = 1,557,774.10 × 638,934.67
  4. Step 4: Simplify right side
    1,128,967.45x = 995,315,870,907.45
  5. Step 5: Solve for x
    x = 995,315,870,907.45/1,128,967.45
  6. Step 6: Final answer
    x = 881,616.09

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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.