Home / 778,736.64-1,074,645.76-439,313.92

Finding the Fourth Proportional to 778,736.64, 1,074,645.76 and 439,313.92

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Solution

The fourth proportional to 778,736.64, 1,074,645.76 and 439,313.92 is: 606,247.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,736.64 : 1,074,645.76 = 439,313.92 : x
  2. Step 2: Convert to fraction form
    778,736.64/1,074,645.76 = 439,313.92/x
  3. Step 3: Cross multiply
    778,736.64x = 1,074,645.76 × 439,313.92
  4. Step 4: Simplify right side
    778,736.64x = 472,106,841,436.98
  5. Step 5: Solve for x
    x = 472,106,841,436.98/778,736.64
  6. Step 6: Final answer
    x = 606,247.12

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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.