Home / 400,775.07-553,444.20-257,783.34

Finding the Fourth Proportional to 400,775.07, 553,444.20 and 257,783.34

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Solution

The fourth proportional to 400,775.07, 553,444.20 and 257,783.34 is: 355,981.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,775.07 : 553,444.20 = 257,783.34 : x
  2. Step 2: Convert to fraction form
    400,775.07/553,444.20 = 257,783.34/x
  3. Step 3: Cross multiply
    400,775.07x = 553,444.20 × 257,783.34
  4. Step 4: Simplify right side
    400,775.07x = 142,668,694,379.63
  5. Step 5: Solve for x
    x = 142,668,694,379.63/400,775.07
  6. Step 6: Final answer
    x = 355,981.96

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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.