Home / 690,438.68-952,786.09-384,514.98

Finding the Fourth Proportional to 690,438.68, 952,786.09 and 384,514.98

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Solution

The fourth proportional to 690,438.68, 952,786.09 and 384,514.98 is: 530,619.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,438.68 : 952,786.09 = 384,514.98 : x
  2. Step 2: Convert to fraction form
    690,438.68/952,786.09 = 384,514.98/x
  3. Step 3: Cross multiply
    690,438.68x = 952,786.09 × 384,514.98
  4. Step 4: Simplify right side
    690,438.68x = 366,360,521,248.32
  5. Step 5: Solve for x
    x = 366,360,521,248.32/690,438.68
  6. Step 6: Final answer
    x = 530,619.93

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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.