Home / 500,397.12-690,534.56-285,533.28

Finding the Fourth Proportional to 500,397.12, 690,534.56 and 285,533.28

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Solution

The fourth proportional to 500,397.12, 690,534.56 and 285,533.28 is: 394,028.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,397.12 : 690,534.56 = 285,533.28 : x
  2. Step 2: Convert to fraction form
    500,397.12/690,534.56 = 285,533.28/x
  3. Step 3: Cross multiply
    500,397.12x = 690,534.56 × 285,533.28
  4. Step 4: Simplify right side
    500,397.12x = 197,170,597,870.16
  5. Step 5: Solve for x
    x = 197,170,597,870.16/500,397.12
  6. Step 6: Final answer
    x = 394,028.24

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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.