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Finding the Fourth Proportional to 539,890.31, 745,048.67 and 313,550.39

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Solution

The fourth proportional to 539,890.31, 745,048.67 and 313,550.39 is: 432,699.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,890.31 : 745,048.67 = 313,550.39 : x
  2. Step 2: Convert to fraction form
    539,890.31/745,048.67 = 313,550.39/x
  3. Step 3: Cross multiply
    539,890.31x = 745,048.67 × 313,550.39
  4. Step 4: Simplify right side
    539,890.31x = 233,610,301,342.35
  5. Step 5: Solve for x
    x = 233,610,301,342.35/539,890.31
  6. Step 6: Final answer
    x = 432,699.56

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1.5x scale

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.