Home / 711,178-1,066,738.44-391,962.66

Finding the Fourth Proportional to 711,178, 1,066,738.44 and 391,962.66

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Solution

The fourth proportional to 711,178, 1,066,738.44 and 391,962.66 is: 587,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,178 : 1,066,738.44 = 391,962.66 : x
  2. Step 2: Convert to fraction form
    711,178/1,066,738.44 = 391,962.66/x
  3. Step 3: Cross multiply
    711,178x = 1,066,738.44 × 391,962.66
  4. Step 4: Simplify right side
    711,178x = 418,121,636,466.65
  5. Step 5: Solve for x
    x = 418,121,636,466.65/711,178
  6. Step 6: Final answer
    x = 587,928.25

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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.