Home / 811,804.96-1,217,682.32-385,647.51

Finding the Fourth Proportional to 811,804.96, 1,217,682.32 and 385,647.51

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Solution

The fourth proportional to 811,804.96, 1,217,682.32 and 385,647.51 is: 578,459.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,804.96 : 1,217,682.32 = 385,647.51 : x
  2. Step 2: Convert to fraction form
    811,804.96/1,217,682.32 = 385,647.51/x
  3. Step 3: Cross multiply
    811,804.96x = 1,217,682.32 × 385,647.51
  4. Step 4: Simplify right side
    811,804.96x = 469,596,152,750.79
  5. Step 5: Solve for x
    x = 469,596,152,750.79/811,804.96
  6. Step 6: Final answer
    x = 578,459.33

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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.