Home / 1,277,605.20-1,916,407.80-1,215,397.20

Finding the Fourth Proportional to 1,277,605.20, 1,916,407.80 and 1,215,397.20

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Solution

The fourth proportional to 1,277,605.20, 1,916,407.80 and 1,215,397.20 is: 1,823,095.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,605.20 : 1,916,407.80 = 1,215,397.20 : x
  2. Step 2: Convert to fraction form
    1,277,605.20/1,916,407.80 = 1,215,397.20/x
  3. Step 3: Cross multiply
    1,277,605.20x = 1,916,407.80 × 1,215,397.20
  4. Step 4: Simplify right side
    1,277,605.20x = 2,329,196,674,178.16
  5. Step 5: Solve for x
    x = 2,329,196,674,178.16/1,277,605.20
  6. Step 6: Final answer
    x = 1,823,095.80

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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.