Home / 805,327.45-1,111,355.70-442,774.78

Finding the Fourth Proportional to 805,327.45, 1,111,355.70 and 442,774.78

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Solution

The fourth proportional to 805,327.45, 1,111,355.70 and 442,774.78 is: 611,031.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,327.45 : 1,111,355.70 = 442,774.78 : x
  2. Step 2: Convert to fraction form
    805,327.45/1,111,355.70 = 442,774.78/x
  3. Step 3: Cross multiply
    805,327.45x = 1,111,355.70 × 442,774.78
  4. Step 4: Simplify right side
    805,327.45x = 492,080,275,569.25
  5. Step 5: Solve for x
    x = 492,080,275,569.25/805,327.45
  6. Step 6: Final answer
    x = 611,031.30

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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.