Home / 1,380,320.50-1,904,792.49-768,457.54

Finding the Fourth Proportional to 1,380,320.50, 1,904,792.49 and 768,457.54

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Solution

The fourth proportional to 1,380,320.50, 1,904,792.49 and 768,457.54 is: 1,060,443.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,320.50 : 1,904,792.49 = 768,457.54 : x
  2. Step 2: Convert to fraction form
    1,380,320.50/1,904,792.49 = 768,457.54/x
  3. Step 3: Cross multiply
    1,380,320.50x = 1,904,792.49 × 768,457.54
  4. Step 4: Simplify right side
    1,380,320.50x = 1,463,752,151,075.87
  5. Step 5: Solve for x
    x = 1,463,752,151,075.87/1,380,320.50
  6. Step 6: Final answer
    x = 1,060,443.68

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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.