Home / 840,107.70-1,159,009.86-486,255.74

Finding the Fourth Proportional to 840,107.70, 1,159,009.86 and 486,255.74

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Solution

The fourth proportional to 840,107.70, 1,159,009.86 and 486,255.74 is: 670,836.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,107.70 : 1,159,009.86 = 486,255.74 : x
  2. Step 2: Convert to fraction form
    840,107.70/1,159,009.86 = 486,255.74/x
  3. Step 3: Cross multiply
    840,107.70x = 1,159,009.86 × 486,255.74
  4. Step 4: Simplify right side
    840,107.70x = 563,575,197,141.60
  5. Step 5: Solve for x
    x = 563,575,197,141.60/840,107.70
  6. Step 6: Final answer
    x = 670,836.84

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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.