Home / 711,178.12-1,066,738.63-391,962.79

Finding the Fourth Proportional to 711,178.12, 1,066,738.63 and 391,962.79

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Solution

The fourth proportional to 711,178.12, 1,066,738.63 and 391,962.79 is: 587,928.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,178.12 : 1,066,738.63 = 391,962.79 : x
  2. Step 2: Convert to fraction form
    711,178.12/1,066,738.63 = 391,962.79/x
  3. Step 3: Cross multiply
    711,178.12x = 1,066,738.63 × 391,962.79
  4. Step 4: Simplify right side
    711,178.12x = 418,121,849,615.58
  5. Step 5: Solve for x
    x = 418,121,849,615.58/711,178.12
  6. Step 6: Final answer
    x = 587,928.45

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1.5x scale

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.