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Finding the Fourth Proportional to 571,810, 789,599.42 and 357,316.60

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Solution

The fourth proportional to 571,810, 789,599.42 and 357,316.60 is: 493,410.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,810 : 789,599.42 = 357,316.60 : x
  2. Step 2: Convert to fraction form
    571,810/789,599.42 = 357,316.60/x
  3. Step 3: Cross multiply
    571,810x = 789,599.42 × 357,316.60
  4. Step 4: Simplify right side
    571,810x = 282,136,980,116.37
  5. Step 5: Solve for x
    x = 282,136,980,116.37/571,810
  6. Step 6: Final answer
    x = 493,410.36

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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.