Home / 1,199,756,783.86-1,799,169,913.41-412,660,776.40

Finding the Fourth Proportional to 1,199,756,783.86, 1,799,169,913.41 and 412,660,776.40

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Solution

The fourth proportional to 1,199,756,783.86, 1,799,169,913.41 and 412,660,776.40 is: 618,831,135.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199,756,783.86 : 1,799,169,913.41 = 412,660,776.40 : x
  2. Step 2: Convert to fraction form
    1,199,756,783.86/1,799,169,913.41 = 412,660,776.40/x
  3. Step 3: Cross multiply
    1,199,756,783.86x = 1,799,169,913.41 × 412,660,776.40
  4. Step 4: Simplify right side
    1,199,756,783.86x = 742,446,853,337,225,216
  5. Step 5: Solve for x
    x = 742,446,853,337,225,216/1,199,756,783.86
  6. Step 6: Final answer
    x = 618,831,135.88

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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.