Home / 918,961,279.86-1,268,174,659.50-501,275,422.74

Finding the Fourth Proportional to 918,961,279.86, 1,268,174,659.50 and 501,275,422.74

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Solution

The fourth proportional to 918,961,279.86, 1,268,174,659.50 and 501,275,422.74 is: 691,764,498.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,961,279.86 : 1,268,174,659.50 = 501,275,422.74 : x
  2. Step 2: Convert to fraction form
    918,961,279.86/1,268,174,659.50 = 501,275,422.74/x
  3. Step 3: Cross multiply
    918,961,279.86x = 1,268,174,659.50 × 501,275,422.74
  4. Step 4: Simplify right side
    918,961,279.86x = 635,704,788,549,018,112
  5. Step 5: Solve for x
    x = 635,704,788,549,018,112/918,961,279.86
  6. Step 6: Final answer
    x = 691,764,498.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.