Home / 490,993.04-732,905.14-421,320.08

Finding the Fourth Proportional to 490,993.04, 732,905.14 and 421,320.08

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Solution

The fourth proportional to 490,993.04, 732,905.14 and 421,320.08 is: 628,904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,993.04 : 732,905.14 = 421,320.08 : x
  2. Step 2: Convert to fraction form
    490,993.04/732,905.14 = 421,320.08/x
  3. Step 3: Cross multiply
    490,993.04x = 732,905.14 × 421,320.08
  4. Step 4: Simplify right side
    490,993.04x = 308,787,652,217.21
  5. Step 5: Solve for x
    x = 308,787,652,217.21/490,993.04
  6. Step 6: Final answer
    x = 628,904.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.