Home / 858,253,505.60-1,287,572,164.20-312,995,039.60

Finding the Fourth Proportional to 858,253,505.60, 1,287,572,164.20 and 312,995,039.60

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Solution

The fourth proportional to 858,253,505.60, 1,287,572,164.20 and 312,995,039.60 is: 469,562,545.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,253,505.60 : 1,287,572,164.20 = 312,995,039.60 : x
  2. Step 2: Convert to fraction form
    858,253,505.60/1,287,572,164.20 = 312,995,039.60/x
  3. Step 3: Cross multiply
    858,253,505.60x = 1,287,572,164.20 × 312,995,039.60
  4. Step 4: Simplify right side
    858,253,505.60x = 403,003,700,521,636,736
  5. Step 5: Solve for x
    x = 403,003,700,521,636,736/858,253,505.60
  6. Step 6: Final answer
    x = 469,562,545.21

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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.