Home / 698,901.40-1,048,497.90-399,136.60

Finding the Fourth Proportional to 698,901.40, 1,048,497.90 and 399,136.60

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Solution

The fourth proportional to 698,901.40, 1,048,497.90 and 399,136.60 is: 598,788.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,901.40 : 1,048,497.90 = 399,136.60 : x
  2. Step 2: Convert to fraction form
    698,901.40/1,048,497.90 = 399,136.60/x
  3. Step 3: Cross multiply
    698,901.40x = 1,048,497.90 × 399,136.60
  4. Step 4: Simplify right side
    698,901.40x = 418,493,886,913.14
  5. Step 5: Solve for x
    x = 418,493,886,913.14/698,901.40
  6. Step 6: Final answer
    x = 598,788.17

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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.