Home / 1,315,252,008.79-1,815,047,621.26-786,615,910.07

Finding the Fourth Proportional to 1,315,252,008.79, 1,815,047,621.26 and 786,615,910.07

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Solution

The fourth proportional to 1,315,252,008.79, 1,815,047,621.26 and 786,615,910.07 is: 1,085,529,865.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,252,008.79 : 1,815,047,621.26 = 786,615,910.07 : x
  2. Step 2: Convert to fraction form
    1,315,252,008.79/1,815,047,621.26 = 786,615,910.07/x
  3. Step 3: Cross multiply
    1,315,252,008.79x = 1,815,047,621.26 × 786,615,910.07
  4. Step 4: Simplify right side
    1,315,252,008.79x = 1,427,745,336,406,781,952
  5. Step 5: Solve for x
    x = 1,427,745,336,406,781,952/1,315,252,008.79
  6. Step 6: Final answer
    x = 1,085,529,865.66

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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.