Home / 391,203,012.40-586,804,518.60-253,453,505.20

Finding the Fourth Proportional to 391,203,012.40, 586,804,518.60 and 253,453,505.20

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Solution

The fourth proportional to 391,203,012.40, 586,804,518.60 and 253,453,505.20 is: 380,180,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,203,012.40 : 586,804,518.60 = 253,453,505.20 : x
  2. Step 2: Convert to fraction form
    391,203,012.40/586,804,518.60 = 253,453,505.20/x
  3. Step 3: Cross multiply
    391,203,012.40x = 586,804,518.60 × 253,453,505.20
  4. Step 4: Simplify right side
    391,203,012.40x = 148,727,662,106,368,608
  5. Step 5: Solve for x
    x = 148,727,662,106,368,608/391,203,012.40
  6. Step 6: Final answer
    x = 380,180,257.80

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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.