Home / 685,407,007.80-1,028,110,511.70-655,551,833.40

Finding the Fourth Proportional to 685,407,007.80, 1,028,110,511.70 and 655,551,833.40

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Solution

The fourth proportional to 685,407,007.80, 1,028,110,511.70 and 655,551,833.40 is: 983,327,750.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,407,007.80 : 1,028,110,511.70 = 655,551,833.40 : x
  2. Step 2: Convert to fraction form
    685,407,007.80/1,028,110,511.70 = 655,551,833.40/x
  3. Step 3: Cross multiply
    685,407,007.80x = 1,028,110,511.70 × 655,551,833.40
  4. Step 4: Simplify right side
    685,407,007.80x = 673,979,730,882,747,136
  5. Step 5: Solve for x
    x = 673,979,730,882,747,136/685,407,007.80
  6. Step 6: Final answer
    x = 983,327,750.10

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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.