Home / 400,763.03-553,427.64-257,771.30

Finding the Fourth Proportional to 400,763.03, 553,427.64 and 257,771.30

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Solution

The fourth proportional to 400,763.03, 553,427.64 and 257,771.30 is: 355,965.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,763.03 : 553,427.64 = 257,771.30 : x
  2. Step 2: Convert to fraction form
    400,763.03/553,427.64 = 257,771.30/x
  3. Step 3: Cross multiply
    400,763.03x = 553,427.64 × 257,771.30
  4. Step 4: Simplify right side
    400,763.03x = 142,657,759,451.59
  5. Step 5: Solve for x
    x = 142,657,759,451.59/400,763.03
  6. Step 6: Final answer
    x = 355,965.37

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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.