Home / 670,700.18-925,171.34-421,945.81

Finding the Fourth Proportional to 670,700.18, 925,171.34 and 421,945.81

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Solution

The fourth proportional to 670,700.18, 925,171.34 and 421,945.81 is: 582,036.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,700.18 : 925,171.34 = 421,945.81 : x
  2. Step 2: Convert to fraction form
    670,700.18/925,171.34 = 421,945.81/x
  3. Step 3: Cross multiply
    670,700.18x = 925,171.34 × 421,945.81
  4. Step 4: Simplify right side
    670,700.18x = 390,372,166,022.43
  5. Step 5: Solve for x
    x = 390,372,166,022.43/670,700.18
  6. Step 6: Final answer
    x = 582,036.77

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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.