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Finding the Fourth Proportional to 644,117.30, 964,207.65 and 644,117.30

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Solution

The fourth proportional to 644,117.30, 964,207.65 and 644,117.30 is: 964,207.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,117.30 : 964,207.65 = 644,117.30 : x
  2. Step 2: Convert to fraction form
    644,117.30/964,207.65 = 644,117.30/x
  3. Step 3: Cross multiply
    644,117.30x = 964,207.65 × 644,117.30
  4. Step 4: Simplify right side
    644,117.30x = 621,062,828,157.35
  5. Step 5: Solve for x
    x = 621,062,828,157.35/644,117.30
  6. Step 6: Final answer
    x = 964,207.65

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.