Home / 711,550.83-981,963.37-389,260.94

Finding the Fourth Proportional to 711,550.83, 981,963.37 and 389,260.94

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Solution

The fourth proportional to 711,550.83, 981,963.37 and 389,260.94 is: 537,192.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,550.83 : 981,963.37 = 389,260.94 : x
  2. Step 2: Convert to fraction form
    711,550.83/981,963.37 = 389,260.94/x
  3. Step 3: Cross multiply
    711,550.83x = 981,963.37 × 389,260.94
  4. Step 4: Simplify right side
    711,550.83x = 382,239,985,552.07
  5. Step 5: Solve for x
    x = 382,239,985,552.07/711,550.83
  6. Step 6: Final answer
    x = 537,192.81

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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.