Home / 1,221,847,446.42-1,686,205,000.20-720,077,407.38

Finding the Fourth Proportional to 1,221,847,446.42, 1,686,205,000.20 and 720,077,407.38

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Solution

The fourth proportional to 1,221,847,446.42, 1,686,205,000.20 and 720,077,407.38 is: 993,739,544.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,847,446.42 : 1,686,205,000.20 = 720,077,407.38 : x
  2. Step 2: Convert to fraction form
    1,221,847,446.42/1,686,205,000.20 = 720,077,407.38/x
  3. Step 3: Cross multiply
    1,221,847,446.42x = 1,686,205,000.20 × 720,077,407.38
  4. Step 4: Simplify right side
    1,221,847,446.42x = 1,214,198,124,855,208,448
  5. Step 5: Solve for x
    x = 1,214,198,124,855,208,448/1,221,847,446.42
  6. Step 6: Final answer
    x = 993,739,544.50

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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.