Home / 855,378.12-1,180,476.60-492,795.36

Finding the Fourth Proportional to 855,378.12, 1,180,476.60 and 492,795.36

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Solution

The fourth proportional to 855,378.12, 1,180,476.60 and 492,795.36 is: 680,089.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,378.12 : 1,180,476.60 = 492,795.36 : x
  2. Step 2: Convert to fraction form
    855,378.12/1,180,476.60 = 492,795.36/x
  3. Step 3: Cross multiply
    855,378.12x = 1,180,476.60 × 492,795.36
  4. Step 4: Simplify right side
    855,378.12x = 581,733,391,068.58
  5. Step 5: Solve for x
    x = 581,733,391,068.58/855,378.12
  6. Step 6: Final answer
    x = 680,089.16

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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.