Home / 685,406,998.80-1,028,110,498.20-655,551,824.40

Finding the Fourth Proportional to 685,406,998.80, 1,028,110,498.20 and 655,551,824.40

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Solution

The fourth proportional to 685,406,998.80, 1,028,110,498.20 and 655,551,824.40 is: 983,327,736.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,406,998.80 : 1,028,110,498.20 = 655,551,824.40 : x
  2. Step 2: Convert to fraction form
    685,406,998.80/1,028,110,498.20 = 655,551,824.40/x
  3. Step 3: Cross multiply
    685,406,998.80x = 1,028,110,498.20 × 655,551,824.40
  4. Step 4: Simplify right side
    685,406,998.80x = 673,979,712,779,802,880
  5. Step 5: Solve for x
    x = 673,979,712,779,802,880/685,406,998.80
  6. Step 6: Final answer
    x = 983,327,736.60

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1.5x scale

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.