Home / 391,203,021.40-586,804,532.10-253,453,514.20

Finding the Fourth Proportional to 391,203,021.40, 586,804,532.10 and 253,453,514.20

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Solution

The fourth proportional to 391,203,021.40, 586,804,532.10 and 253,453,514.20 is: 380,180,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,203,021.40 : 586,804,532.10 = 253,453,514.20 : x
  2. Step 2: Convert to fraction form
    391,203,021.40/586,804,532.10 = 253,453,514.20/x
  3. Step 3: Cross multiply
    391,203,021.40x = 586,804,532.10 × 253,453,514.20
  4. Step 4: Simplify right side
    391,203,021.40x = 148,727,670,809,231,712
  5. Step 5: Solve for x
    x = 148,727,670,809,231,712/391,203,021.40
  6. Step 6: Final answer
    x = 380,180,271.30

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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.