Home / 691,300.70-1,036,999.65-391,924.70

Finding the Fourth Proportional to 691,300.70, 1,036,999.65 and 391,924.70

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Solution

The fourth proportional to 691,300.70, 1,036,999.65 and 391,924.70 is: 587,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,300.70 : 1,036,999.65 = 391,924.70 : x
  2. Step 2: Convert to fraction form
    691,300.70/1,036,999.65 = 391,924.70/x
  3. Step 3: Cross multiply
    691,300.70x = 1,036,999.65 × 391,924.70
  4. Step 4: Simplify right side
    691,300.70x = 406,425,776,726.36
  5. Step 5: Solve for x
    x = 406,425,776,726.36/691,300.70
  6. Step 6: Final answer
    x = 587,914.60

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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.