Home / 738,845.31-1,019,605.01-399,312.75

Finding the Fourth Proportional to 738,845.31, 1,019,605.01 and 399,312.75

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Solution

The fourth proportional to 738,845.31, 1,019,605.01 and 399,312.75 is: 551,050.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,845.31 : 1,019,605.01 = 399,312.75 : x
  2. Step 2: Convert to fraction form
    738,845.31/1,019,605.01 = 399,312.75/x
  3. Step 3: Cross multiply
    738,845.31x = 1,019,605.01 × 399,312.75
  4. Step 4: Simplify right side
    738,845.31x = 407,141,278,460.31
  5. Step 5: Solve for x
    x = 407,141,278,460.31/738,845.31
  6. Step 6: Final answer
    x = 551,050.77

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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.