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Finding the Fourth Proportional to 702,919.60, 969,863.16 and 401,210.80

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Solution

The fourth proportional to 702,919.60, 969,863.16 and 401,210.80 is: 553,576.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,919.60 : 969,863.16 = 401,210.80 : x
  2. Step 2: Convert to fraction form
    702,919.60/969,863.16 = 401,210.80/x
  3. Step 3: Cross multiply
    702,919.60x = 969,863.16 × 401,210.80
  4. Step 4: Simplify right side
    702,919.60x = 389,119,574,314.13
  5. Step 5: Solve for x
    x = 389,119,574,314.13/702,919.60
  6. Step 6: Final answer
    x = 553,576.22

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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.