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Finding the Fourth Proportional to 570,290.36, 786,874.74 and 340,813.22

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Solution

The fourth proportional to 570,290.36, 786,874.74 and 340,813.22 is: 470,246.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,290.36 : 786,874.74 = 340,813.22 : x
  2. Step 2: Convert to fraction form
    570,290.36/786,874.74 = 340,813.22/x
  3. Step 3: Cross multiply
    570,290.36x = 786,874.74 × 340,813.22
  4. Step 4: Simplify right side
    570,290.36x = 268,177,313,876.06
  5. Step 5: Solve for x
    x = 268,177,313,876.06/570,290.36
  6. Step 6: Final answer
    x = 470,246.97

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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.