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Finding the Fourth Proportional to 556,669.80, 835,004.70 and 257,061.74

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Solution

The fourth proportional to 556,669.80, 835,004.70 and 257,061.74 is: 385,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,669.80 : 835,004.70 = 257,061.74 : x
  2. Step 2: Convert to fraction form
    556,669.80/835,004.70 = 257,061.74/x
  3. Step 3: Cross multiply
    556,669.80x = 835,004.70 × 257,061.74
  4. Step 4: Simplify right side
    556,669.80x = 214,647,756,915.15
  5. Step 5: Solve for x
    x = 214,647,756,915.15/556,669.80
  6. Step 6: Final answer
    x = 385,592.60

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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.