Home / 391,203,009.90-586,804,514.85-253,453,502.70

Finding the Fourth Proportional to 391,203,009.90, 586,804,514.85 and 253,453,502.70

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Solution

The fourth proportional to 391,203,009.90, 586,804,514.85 and 253,453,502.70 is: 380,180,254.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,203,009.90 : 586,804,514.85 = 253,453,502.70 : x
  2. Step 2: Convert to fraction form
    391,203,009.90/586,804,514.85 = 253,453,502.70/x
  3. Step 3: Cross multiply
    391,203,009.90x = 586,804,514.85 × 253,453,502.70
  4. Step 4: Simplify right side
    391,203,009.90x = 148,727,659,688,906,656
  5. Step 5: Solve for x
    x = 148,727,659,688,906,656/391,203,009.90
  6. Step 6: Final answer
    x = 380,180,254.05

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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.