Home / 778,881.78-1,074,889.53-439,349.94

Finding the Fourth Proportional to 778,881.78, 1,074,889.53 and 439,349.94

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Solution

The fourth proportional to 778,881.78, 1,074,889.53 and 439,349.94 is: 606,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,881.78 : 1,074,889.53 = 439,349.94 : x
  2. Step 2: Convert to fraction form
    778,881.78/1,074,889.53 = 439,349.94/x
  3. Step 3: Cross multiply
    778,881.78x = 1,074,889.53 × 439,349.94
  4. Step 4: Simplify right side
    778,881.78x = 472,252,650,512.13
  5. Step 5: Solve for x
    x = 472,252,650,512.13/778,881.78
  6. Step 6: Final answer
    x = 606,321.35

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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.