Home / 786,783,387.96-1,085,903,197.92-469,263,987.36

Finding the Fourth Proportional to 786,783,387.96, 1,085,903,197.92 and 469,263,987.36

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Solution

The fourth proportional to 786,783,387.96, 1,085,903,197.92 and 469,263,987.36 is: 647,669,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,783,387.96 : 1,085,903,197.92 = 469,263,987.36 : x
  2. Step 2: Convert to fraction form
    786,783,387.96/1,085,903,197.92 = 469,263,987.36/x
  3. Step 3: Cross multiply
    786,783,387.96x = 1,085,903,197.92 × 469,263,987.36
  4. Step 4: Simplify right side
    786,783,387.96x = 509,575,264,542,914,496
  5. Step 5: Solve for x
    x = 509,575,264,542,914,496/786,783,387.96
  6. Step 6: Final answer
    x = 647,669,069.20

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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.