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Finding the Fourth Proportional to 644,805.70, 903,661.10 and 644,805.70

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Solution

The fourth proportional to 644,805.70, 903,661.10 and 644,805.70 is: 903,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,805.70 : 903,661.10 = 644,805.70 : x
  2. Step 2: Convert to fraction form
    644,805.70/903,661.10 = 644,805.70/x
  3. Step 3: Cross multiply
    644,805.70x = 903,661.10 × 644,805.70
  4. Step 4: Simplify right side
    644,805.70x = 582,685,828,148.27
  5. Step 5: Solve for x
    x = 582,685,828,148.27/644,805.70
  6. Step 6: Final answer
    x = 903,661.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.