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Finding the Fourth Proportional to 539,879, 745,033.08 and 313,539.08

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Solution

The fourth proportional to 539,879, 745,033.08 and 313,539.08 is: 432,683.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,879 : 745,033.08 = 313,539.08 : x
  2. Step 2: Convert to fraction form
    539,879/745,033.08 = 313,539.08/x
  3. Step 3: Cross multiply
    539,879x = 745,033.08 × 313,539.08
  4. Step 4: Simplify right side
    539,879x = 233,596,986,472.77
  5. Step 5: Solve for x
    x = 233,596,986,472.77/539,879
  6. Step 6: Final answer
    x = 432,683.97

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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.