Home / 1,243,019,711.40-1,864,778,399.10-369,619,391.40

Finding the Fourth Proportional to 1,243,019,711.40, 1,864,778,399.10 and 369,619,391.40

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Solution

The fourth proportional to 1,243,019,711.40, 1,864,778,399.10 and 369,619,391.40 is: 554,503,078.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,019,711.40 : 1,864,778,399.10 = 369,619,391.40 : x
  2. Step 2: Convert to fraction form
    1,243,019,711.40/1,864,778,399.10 = 369,619,391.40/x
  3. Step 3: Cross multiply
    1,243,019,711.40x = 1,864,778,399.10 × 369,619,391.40
  4. Step 4: Simplify right side
    1,243,019,711.40x = 689,258,256,971,208,192
  5. Step 5: Solve for x
    x = 689,258,256,971,208,192/1,243,019,711.40
  6. Step 6: Final answer
    x = 554,503,078.79

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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.