Home / 817,762.35-1,128,486.92-455,176.90

Finding the Fourth Proportional to 817,762.35, 1,128,486.92 and 455,176.90

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Solution

The fourth proportional to 817,762.35, 1,128,486.92 and 455,176.90 is: 628,130.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,762.35 : 1,128,486.92 = 455,176.90 : x
  2. Step 2: Convert to fraction form
    817,762.35/1,128,486.92 = 455,176.90/x
  3. Step 3: Cross multiply
    817,762.35x = 1,128,486.92 × 455,176.90
  4. Step 4: Simplify right side
    817,762.35x = 513,661,177,936.15
  5. Step 5: Solve for x
    x = 513,661,177,936.15/817,762.35
  6. Step 6: Final answer
    x = 628,130.14

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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.