Home / 1,147,565.34-1,583,640-638,256.78

Finding the Fourth Proportional to 1,147,565.34, 1,583,640 and 638,256.78

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Solution

The fourth proportional to 1,147,565.34, 1,583,640 and 638,256.78 is: 880,794.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,565.34 : 1,583,640 = 638,256.78 : x
  2. Step 2: Convert to fraction form
    1,147,565.34/1,583,640 = 638,256.78/x
  3. Step 3: Cross multiply
    1,147,565.34x = 1,583,640 × 638,256.78
  4. Step 4: Simplify right side
    1,147,565.34x = 1,010,768,967,079.20
  5. Step 5: Solve for x
    x = 1,010,768,967,079.20/1,147,565.34
  6. Step 6: Final answer
    x = 880,794.26

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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.