Home / 1,277,556.60-1,915,605.90-478,864.20

Finding the Fourth Proportional to 1,277,556.60, 1,915,605.90 and 478,864.20

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Solution

The fourth proportional to 1,277,556.60, 1,915,605.90 and 478,864.20 is: 718,023.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,556.60 : 1,915,605.90 = 478,864.20 : x
  2. Step 2: Convert to fraction form
    1,277,556.60/1,915,605.90 = 478,864.20/x
  3. Step 3: Cross multiply
    1,277,556.60x = 1,915,605.90 × 478,864.20
  4. Step 4: Simplify right side
    1,277,556.60x = 917,315,086,818.78
  5. Step 5: Solve for x
    x = 917,315,086,818.78/1,277,556.60
  6. Step 6: Final answer
    x = 718,023.05

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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.