Home / 391,220,630.40-586,830,945.60-253,471,123.20

Finding the Fourth Proportional to 391,220,630.40, 586,830,945.60 and 253,471,123.20

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Solution

The fourth proportional to 391,220,630.40, 586,830,945.60 and 253,471,123.20 is: 380,206,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,220,630.40 : 586,830,945.60 = 253,471,123.20 : x
  2. Step 2: Convert to fraction form
    391,220,630.40/586,830,945.60 = 253,471,123.20/x
  3. Step 3: Cross multiply
    391,220,630.40x = 586,830,945.60 × 253,471,123.20
  4. Step 4: Simplify right side
    391,220,630.40x = 148,744,698,909,750,112
  5. Step 5: Solve for x
    x = 148,744,698,909,750,112/391,220,630.40
  6. Step 6: Final answer
    x = 380,206,684.80

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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.