Home / 780,651,738.72-1,077,289,348.77-446,120,430.30

Finding the Fourth Proportional to 780,651,738.72, 1,077,289,348.77 and 446,120,430.30

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Solution

The fourth proportional to 780,651,738.72, 1,077,289,348.77 and 446,120,430.30 is: 615,640,450.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,651,738.72 : 1,077,289,348.77 = 446,120,430.30 : x
  2. Step 2: Convert to fraction form
    780,651,738.72/1,077,289,348.77 = 446,120,430.30/x
  3. Step 3: Cross multiply
    780,651,738.72x = 1,077,289,348.77 × 446,120,430.30
  4. Step 4: Simplify right side
    780,651,738.72x = 480,600,787,830,879,168
  5. Step 5: Solve for x
    x = 480,600,787,830,879,168/780,651,738.72
  6. Step 6: Final answer
    x = 615,640,450.14

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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.