Home / 728,918.06-1,006,017.72-442,382.72

Finding the Fourth Proportional to 728,918.06, 1,006,017.72 and 442,382.72

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Solution

The fourth proportional to 728,918.06, 1,006,017.72 and 442,382.72 is: 610,555.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,918.06 : 1,006,017.72 = 442,382.72 : x
  2. Step 2: Convert to fraction form
    728,918.06/1,006,017.72 = 442,382.72/x
  3. Step 3: Cross multiply
    728,918.06x = 1,006,017.72 × 442,382.72
  4. Step 4: Simplify right side
    728,918.06x = 445,044,855,341.80
  5. Step 5: Solve for x
    x = 445,044,855,341.80/728,918.06
  6. Step 6: Final answer
    x = 610,555.40

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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.