Home / 1,019,801.46-1,529,876.47-420,434.98

Finding the Fourth Proportional to 1,019,801.46, 1,529,876.47 and 420,434.98

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Solution

The fourth proportional to 1,019,801.46, 1,529,876.47 and 420,434.98 is: 630,724.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,801.46 : 1,529,876.47 = 420,434.98 : x
  2. Step 2: Convert to fraction form
    1,019,801.46/1,529,876.47 = 420,434.98/x
  3. Step 3: Cross multiply
    1,019,801.46x = 1,529,876.47 × 420,434.98
  4. Step 4: Simplify right side
    1,019,801.46x = 643,213,583,066.92
  5. Step 5: Solve for x
    x = 643,213,583,066.92/1,019,801.46
  6. Step 6: Final answer
    x = 630,724.32

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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.