Home / 1,019,470.74-1,529,390.39-420,098.28

Finding the Fourth Proportional to 1,019,470.74, 1,529,390.39 and 420,098.28

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Solution

The fourth proportional to 1,019,470.74, 1,529,390.39 and 420,098.28 is: 630,223.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,470.74 : 1,529,390.39 = 420,098.28 : x
  2. Step 2: Convert to fraction form
    1,019,470.74/1,529,390.39 = 420,098.28/x
  3. Step 3: Cross multiply
    1,019,470.74x = 1,529,390.39 × 420,098.28
  4. Step 4: Simplify right side
    1,019,470.74x = 642,494,270,187.04
  5. Step 5: Solve for x
    x = 642,494,270,187.04/1,019,470.74
  6. Step 6: Final answer
    x = 630,223.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.