Home / 805,345.48-1,111,378.98-442,806.40

Finding the Fourth Proportional to 805,345.48, 1,111,378.98 and 442,806.40

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Solution

The fourth proportional to 805,345.48, 1,111,378.98 and 442,806.40 is: 611,074.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,345.48 : 1,111,378.98 = 442,806.40 : x
  2. Step 2: Convert to fraction form
    805,345.48/1,111,378.98 = 442,806.40/x
  3. Step 3: Cross multiply
    805,345.48x = 1,111,378.98 × 442,806.40
  4. Step 4: Simplify right side
    805,345.48x = 492,125,725,169.47
  5. Step 5: Solve for x
    x = 492,125,725,169.47/805,345.48
  6. Step 6: Final answer
    x = 611,074.05

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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.