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Finding the Fourth Proportional to 695,355.68, 959,511.48 and 389,389.52

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Solution

The fourth proportional to 695,355.68, 959,511.48 and 389,389.52 is: 537,313.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,355.68 : 959,511.48 = 389,389.52 : x
  2. Step 2: Convert to fraction form
    695,355.68/959,511.48 = 389,389.52/x
  3. Step 3: Cross multiply
    695,355.68x = 959,511.48 × 389,389.52
  4. Step 4: Simplify right side
    695,355.68x = 373,623,714,631.69
  5. Step 5: Solve for x
    x = 373,623,714,631.69/695,355.68
  6. Step 6: Final answer
    x = 537,313.10

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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.