Home / 1,211,128.32-1,671,402.24-674,618.88

Finding the Fourth Proportional to 1,211,128.32, 1,671,402.24 and 674,618.88

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Solution

The fourth proportional to 1,211,128.32, 1,671,402.24 and 674,618.88 is: 930,999.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,128.32 : 1,671,402.24 = 674,618.88 : x
  2. Step 2: Convert to fraction form
    1,211,128.32/1,671,402.24 = 674,618.88/x
  3. Step 3: Cross multiply
    1,211,128.32x = 1,671,402.24 × 674,618.88
  4. Step 4: Simplify right side
    1,211,128.32x = 1,127,559,507,178.29
  5. Step 5: Solve for x
    x = 1,127,559,507,178.29/1,211,128.32
  6. Step 6: Final answer
    x = 930,999.21

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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.