Home / 778,131.63-1,073,904.21-456,112.28

Finding the Fourth Proportional to 778,131.63, 1,073,904.21 and 456,112.28

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Solution

The fourth proportional to 778,131.63, 1,073,904.21 and 456,112.28 is: 629,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,131.63 : 1,073,904.21 = 456,112.28 : x
  2. Step 2: Convert to fraction form
    778,131.63/1,073,904.21 = 456,112.28/x
  3. Step 3: Cross multiply
    778,131.63x = 1,073,904.21 × 456,112.28
  4. Step 4: Simplify right side
    778,131.63x = 489,820,900,409.46
  5. Step 5: Solve for x
    x = 489,820,900,409.46/778,131.63
  6. Step 6: Final answer
    x = 629,483.34

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Double scale
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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.