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Finding the Fourth Proportional to 654,130.80, 902,708.64 and 396,004.32

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Solution

The fourth proportional to 654,130.80, 902,708.64 and 396,004.32 is: 546,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,130.80 : 902,708.64 = 396,004.32 : x
  2. Step 2: Convert to fraction form
    654,130.80/902,708.64 = 396,004.32/x
  3. Step 3: Cross multiply
    654,130.80x = 902,708.64 × 396,004.32
  4. Step 4: Simplify right side
    654,130.80x = 357,476,521,141.33
  5. Step 5: Solve for x
    x = 357,476,521,141.33/654,130.80
  6. Step 6: Final answer
    x = 546,490.89

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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.