Home / 391,163,999.40-586,745,999.10-253,414,492.20

Finding the Fourth Proportional to 391,163,999.40, 586,745,999.10 and 253,414,492.20

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Solution

The fourth proportional to 391,163,999.40, 586,745,999.10 and 253,414,492.20 is: 380,121,738.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,163,999.40 : 586,745,999.10 = 253,414,492.20 : x
  2. Step 2: Convert to fraction form
    391,163,999.40/586,745,999.10 = 253,414,492.20/x
  3. Step 3: Cross multiply
    391,163,999.40x = 586,745,999.10 × 253,414,492.20
  4. Step 4: Simplify right side
    391,163,999.40x = 148,689,939,412,308,160
  5. Step 5: Solve for x
    x = 148,689,939,412,308,160/391,163,999.40
  6. Step 6: Final answer
    x = 380,121,738.30

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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.