Home / 724,931,997.60-1,087,964,866.80-336,802,920.60

Finding the Fourth Proportional to 724,931,997.60, 1,087,964,866.80 and 336,802,920.60

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Solution

The fourth proportional to 724,931,997.60, 1,087,964,866.80 and 336,802,920.60 is: 505,467,748.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,931,997.60 : 1,087,964,866.80 = 336,802,920.60 : x
  2. Step 2: Convert to fraction form
    724,931,997.60/1,087,964,866.80 = 336,802,920.60/x
  3. Step 3: Cross multiply
    724,931,997.60x = 1,087,964,866.80 × 336,802,920.60
  4. Step 4: Simplify right side
    724,931,997.60x = 366,429,744,648,430,016
  5. Step 5: Solve for x
    x = 366,429,744,648,430,016/724,931,997.60
  6. Step 6: Final answer
    x = 505,467,748.51

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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.