Home / 789,699,562.82-1,090,920,538.36-630,720,959.77

Finding the Fourth Proportional to 789,699,562.82, 1,090,920,538.36 and 630,720,959.77

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Solution

The fourth proportional to 789,699,562.82, 1,090,920,538.36 and 630,720,959.77 is: 871,301,544.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,699,562.82 : 1,090,920,538.36 = 630,720,959.77 : x
  2. Step 2: Convert to fraction form
    789,699,562.82/1,090,920,538.36 = 630,720,959.77/x
  3. Step 3: Cross multiply
    789,699,562.82x = 1,090,920,538.36 × 630,720,959.77
  4. Step 4: Simplify right side
    789,699,562.82x = 688,066,448,989,344,896
  5. Step 5: Solve for x
    x = 688,066,448,989,344,896/789,699,562.82
  6. Step 6: Final answer
    x = 871,301,544.77

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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.