Home / 778,730.70-1,074,878.19-456,510.54

Finding the Fourth Proportional to 778,730.70, 1,074,878.19 and 456,510.54

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Solution

The fourth proportional to 778,730.70, 1,074,878.19 and 456,510.54 is: 630,119.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,730.70 : 1,074,878.19 = 456,510.54 : x
  2. Step 2: Convert to fraction form
    778,730.70/1,074,878.19 = 456,510.54/x
  3. Step 3: Cross multiply
    778,730.70x = 1,074,878.19 × 456,510.54
  4. Step 4: Simplify right side
    778,730.70x = 490,693,222,951.12
  5. Step 5: Solve for x
    x = 490,693,222,951.12/778,730.70
  6. Step 6: Final answer
    x = 630,119.27

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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.