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Finding the Fourth Proportional to 652,623.72, 900,623.22 and 380,879.32

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Solution

The fourth proportional to 652,623.72, 900,623.22 and 380,879.32 is: 525,614.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,623.72 : 900,623.22 = 380,879.32 : x
  2. Step 2: Convert to fraction form
    652,623.72/900,623.22 = 380,879.32/x
  3. Step 3: Cross multiply
    652,623.72x = 900,623.22 × 380,879.32
  4. Step 4: Simplify right side
    652,623.72x = 343,028,759,609.81
  5. Step 5: Solve for x
    x = 343,028,759,609.81/652,623.72
  6. Step 6: Final answer
    x = 525,614.91

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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.