Home / 643,290,651.64-885,499,875.66-560,642,347

Finding the Fourth Proportional to 643,290,651.64, 885,499,875.66 and 560,642,347

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Solution

The fourth proportional to 643,290,651.64, 885,499,875.66 and 560,642,347 is: 771,733,161.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,290,651.64 : 885,499,875.66 = 560,642,347 : x
  2. Step 2: Convert to fraction form
    643,290,651.64/885,499,875.66 = 560,642,347/x
  3. Step 3: Cross multiply
    643,290,651.64x = 885,499,875.66 × 560,642,347
  4. Step 4: Simplify right side
    643,290,651.64x = 496,448,728,558,230,528
  5. Step 5: Solve for x
    x = 496,448,728,558,230,528/643,290,651.64
  6. Step 6: Final answer
    x = 771,733,161.82

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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.