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Finding the Fourth Proportional to 613,386.32, 920,026.62 and 373,438.09

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Solution

The fourth proportional to 613,386.32, 920,026.62 and 373,438.09 is: 560,124.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,386.32 : 920,026.62 = 373,438.09 : x
  2. Step 2: Convert to fraction form
    613,386.32/920,026.62 = 373,438.09/x
  3. Step 3: Cross multiply
    613,386.32x = 920,026.62 × 373,438.09
  4. Step 4: Simplify right side
    613,386.32x = 343,572,984,871.99
  5. Step 5: Solve for x
    x = 343,572,984,871.99/613,386.32
  6. Step 6: Final answer
    x = 560,124.96

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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.