Home / 870,131.70-1,306,181.70-470,566.80

Finding the Fourth Proportional to 870,131.70, 1,306,181.70 and 470,566.80

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Solution

The fourth proportional to 870,131.70, 1,306,181.70 and 470,566.80 is: 706,382.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,131.70 : 1,306,181.70 = 470,566.80 : x
  2. Step 2: Convert to fraction form
    870,131.70/1,306,181.70 = 470,566.80/x
  3. Step 3: Cross multiply
    870,131.70x = 1,306,181.70 × 470,566.80
  4. Step 4: Simplify right side
    870,131.70x = 614,645,742,787.56
  5. Step 5: Solve for x
    x = 614,645,742,787.56/870,131.70
  6. Step 6: Final answer
    x = 706,382.43

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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.