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Finding the Fourth Proportional to 835,388.12, 1,252,881.47 and 385,676.93

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Solution

The fourth proportional to 835,388.12, 1,252,881.47 and 385,676.93 is: 578,422.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,388.12 : 1,252,881.47 = 385,676.93 : x
  2. Step 2: Convert to fraction form
    835,388.12/1,252,881.47 = 385,676.93/x
  3. Step 3: Cross multiply
    835,388.12x = 1,252,881.47 × 385,676.93
  4. Step 4: Simplify right side
    835,388.12x = 483,207,470,810.70
  5. Step 5: Solve for x
    x = 483,207,470,810.70/835,388.12
  6. Step 6: Final answer
    x = 578,422.73

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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.