Home / 492,784.10-738,139.35-409,840.10

Finding the Fourth Proportional to 492,784.10, 738,139.35 and 409,840.10

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Solution

The fourth proportional to 492,784.10, 738,139.35 and 409,840.10 is: 613,897.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,784.10 : 738,139.35 = 409,840.10 : x
  2. Step 2: Convert to fraction form
    492,784.10/738,139.35 = 409,840.10/x
  3. Step 3: Cross multiply
    492,784.10x = 738,139.35 × 409,840.10
  4. Step 4: Simplify right side
    492,784.10x = 302,519,105,017.94
  5. Step 5: Solve for x
    x = 302,519,105,017.94/492,784.10
  6. Step 6: Final answer
    x = 613,897.86

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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.