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Finding the Fourth Proportional to 709,670.88, 1,064,722.86 and 425,676.78

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Solution

The fourth proportional to 709,670.88, 1,064,722.86 and 425,676.78 is: 638,645.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,670.88 : 1,064,722.86 = 425,676.78 : x
  2. Step 2: Convert to fraction form
    709,670.88/1,064,722.86 = 425,676.78/x
  3. Step 3: Cross multiply
    709,670.88x = 1,064,722.86 × 425,676.78
  4. Step 4: Simplify right side
    709,670.88x = 453,227,798,637.19
  5. Step 5: Solve for x
    x = 453,227,798,637.19/709,670.88
  6. Step 6: Final answer
    x = 638,645.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.