Home / 711,235.86-981,505.44-388,946.16

Finding the Fourth Proportional to 711,235.86, 981,505.44 and 388,946.16

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Solution

The fourth proportional to 711,235.86, 981,505.44 and 388,946.16 is: 536,745.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,235.86 : 981,505.44 = 388,946.16 : x
  2. Step 2: Convert to fraction form
    711,235.86/981,505.44 = 388,946.16/x
  3. Step 3: Cross multiply
    711,235.86x = 981,505.44 × 388,946.16
  4. Step 4: Simplify right side
    711,235.86x = 381,752,771,907.11
  5. Step 5: Solve for x
    x = 381,752,771,907.11/711,235.86
  6. Step 6: Final answer
    x = 536,745.68

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Double scale
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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.