Home / 789,987,947.61-1,090,183,347.83-437,586,638.87

Finding the Fourth Proportional to 789,987,947.61, 1,090,183,347.83 and 437,586,638.87

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Solution

The fourth proportional to 789,987,947.61, 1,090,183,347.83 and 437,586,638.87 is: 603,869,550.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,987,947.61 : 1,090,183,347.83 = 437,586,638.87 : x
  2. Step 2: Convert to fraction form
    789,987,947.61/1,090,183,347.83 = 437,586,638.87/x
  3. Step 3: Cross multiply
    789,987,947.61x = 1,090,183,347.83 × 437,586,638.87
  4. Step 4: Simplify right side
    789,987,947.61x = 477,049,666,921,334,976
  5. Step 5: Solve for x
    x = 477,049,666,921,334,976/789,987,947.61
  6. Step 6: Final answer
    x = 603,869,550.62

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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.