Home / 777,404.17-1,072,854.28-455,218.07

Finding the Fourth Proportional to 777,404.17, 1,072,854.28 and 455,218.07

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Solution

The fourth proportional to 777,404.17, 1,072,854.28 and 455,218.07 is: 628,222.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,404.17 : 1,072,854.28 = 455,218.07 : x
  2. Step 2: Convert to fraction form
    777,404.17/1,072,854.28 = 455,218.07/x
  3. Step 3: Cross multiply
    777,404.17x = 1,072,854.28 × 455,218.07
  4. Step 4: Simplify right side
    777,404.17x = 488,382,649,937.59
  5. Step 5: Solve for x
    x = 488,382,649,937.59/777,404.17
  6. Step 6: Final answer
    x = 628,222.32

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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.