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Finding the Fourth Proportional to 586,396.89, 809,314.74 and 371,557.08

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Solution

The fourth proportional to 586,396.89, 809,314.74 and 371,557.08 is: 512,803.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,396.89 : 809,314.74 = 371,557.08 : x
  2. Step 2: Convert to fraction form
    586,396.89/809,314.74 = 371,557.08/x
  3. Step 3: Cross multiply
    586,396.89x = 809,314.74 × 371,557.08
  4. Step 4: Simplify right side
    586,396.89x = 300,706,621,595.36
  5. Step 5: Solve for x
    x = 300,706,621,595.36/586,396.89
  6. Step 6: Final answer
    x = 512,803.92

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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.