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Finding the Fourth Proportional to 654,900.04, 903,776.70 and 400,391.56

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Solution

The fourth proportional to 654,900.04, 903,776.70 and 400,391.56 is: 552,549.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,900.04 : 903,776.70 = 400,391.56 : x
  2. Step 2: Convert to fraction form
    654,900.04/903,776.70 = 400,391.56/x
  3. Step 3: Cross multiply
    654,900.04x = 903,776.70 × 400,391.56
  4. Step 4: Simplify right side
    654,900.04x = 361,864,562,804.65
  5. Step 5: Solve for x
    x = 361,864,562,804.65/654,900.04
  6. Step 6: Final answer
    x = 552,549.31

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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.