Home / 772,522,014.88-1,066,087,971.68-420,105,663.76

Finding the Fourth Proportional to 772,522,014.88, 1,066,087,971.68 and 420,105,663.76

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Solution

The fourth proportional to 772,522,014.88, 1,066,087,971.68 and 420,105,663.76 is: 579,749,944.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,522,014.88 : 1,066,087,971.68 = 420,105,663.76 : x
  2. Step 2: Convert to fraction form
    772,522,014.88/1,066,087,971.68 = 420,105,663.76/x
  3. Step 3: Cross multiply
    772,522,014.88x = 1,066,087,971.68 × 420,105,663.76
  4. Step 4: Simplify right side
    772,522,014.88x = 447,869,594,969,178,432
  5. Step 5: Solve for x
    x = 447,869,594,969,178,432/772,522,014.88
  6. Step 6: Final answer
    x = 579,749,944.13

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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.