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Finding the Fourth Proportional to 874,674.84, 1,207,088.04 and 487,490.44

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Solution

The fourth proportional to 874,674.84, 1,207,088.04 and 487,490.44 is: 672,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,674.84 : 1,207,088.04 = 487,490.44 : x
  2. Step 2: Convert to fraction form
    874,674.84/1,207,088.04 = 487,490.44/x
  3. Step 3: Cross multiply
    874,674.84x = 1,207,088.04 × 487,490.44
  4. Step 4: Simplify right side
    874,674.84x = 588,443,879,738.34
  5. Step 5: Solve for x
    x = 588,443,879,738.34/874,674.84
  6. Step 6: Final answer
    x = 672,757.30

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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.