Home / 805,328.45-1,111,357.08-442,775.78

Finding the Fourth Proportional to 805,328.45, 1,111,357.08 and 442,775.78

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Solution

The fourth proportional to 805,328.45, 1,111,357.08 and 442,775.78 is: 611,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,328.45 : 1,111,357.08 = 442,775.78 : x
  2. Step 2: Convert to fraction form
    805,328.45/1,111,357.08 = 442,775.78/x
  3. Step 3: Cross multiply
    805,328.45x = 1,111,357.08 × 442,775.78
  4. Step 4: Simplify right side
    805,328.45x = 492,081,997,955.52
  5. Step 5: Solve for x
    x = 492,081,997,955.52/805,328.45
  6. Step 6: Final answer
    x = 611,032.68

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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.