Home / 709,744.83-979,464.65-387,457.35

Finding the Fourth Proportional to 709,744.83, 979,464.65 and 387,457.35

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Solution

The fourth proportional to 709,744.83, 979,464.65 and 387,457.35 is: 534,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,744.83 : 979,464.65 = 387,457.35 : x
  2. Step 2: Convert to fraction form
    709,744.83/979,464.65 = 387,457.35/x
  3. Step 3: Cross multiply
    709,744.83x = 979,464.65 × 387,457.35
  4. Step 4: Simplify right side
    709,744.83x = 379,500,775,770.39
  5. Step 5: Solve for x
    x = 379,500,775,770.39/709,744.83
  6. Step 6: Final answer
    x = 534,700.30

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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.