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Finding the Fourth Proportional to 615,057.48, 848,779.68 and 343,125.36

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Solution

The fourth proportional to 615,057.48, 848,779.68 and 343,125.36 is: 473,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,057.48 : 848,779.68 = 343,125.36 : x
  2. Step 2: Convert to fraction form
    615,057.48/848,779.68 = 343,125.36/x
  3. Step 3: Cross multiply
    615,057.48x = 848,779.68 × 343,125.36
  4. Step 4: Simplify right side
    615,057.48x = 291,237,834,524.82
  5. Step 5: Solve for x
    x = 291,237,834,524.82/615,057.48
  6. Step 6: Final answer
    x = 473,513.20

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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.