Home / 778,840.30-1,168,916.55-305,865.10

Finding the Fourth Proportional to 778,840.30, 1,168,916.55 and 305,865.10

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Solution

The fourth proportional to 778,840.30, 1,168,916.55 and 305,865.10 is: 459,055.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,840.30 : 1,168,916.55 = 305,865.10 : x
  2. Step 2: Convert to fraction form
    778,840.30/1,168,916.55 = 305,865.10/x
  3. Step 3: Cross multiply
    778,840.30x = 1,168,916.55 × 305,865.10
  4. Step 4: Simplify right side
    778,840.30x = 357,530,777,457.41
  5. Step 5: Solve for x
    x = 357,530,777,457.41/778,840.30
  6. Step 6: Final answer
    x = 459,055.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.