Home / 772,486,807.12-1,065,999,343.80-437,981,832.88

Finding the Fourth Proportional to 772,486,807.12, 1,065,999,343.80 and 437,981,832.88

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Solution

The fourth proportional to 772,486,807.12, 1,065,999,343.80 and 437,981,832.88 is: 604,396,530.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,486,807.12 : 1,065,999,343.80 = 437,981,832.88 : x
  2. Step 2: Convert to fraction form
    772,486,807.12/1,065,999,343.80 = 437,981,832.88/x
  3. Step 3: Cross multiply
    772,486,807.12x = 1,065,999,343.80 × 437,981,832.88
  4. Step 4: Simplify right side
    772,486,807.12x = 466,888,346,446,401,216
  5. Step 5: Solve for x
    x = 466,888,346,446,401,216/772,486,807.12
  6. Step 6: Final answer
    x = 604,396,530.97

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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.