Home / 1,018,796,544.21-1,405,930,779.51-572,761,895.66

Finding the Fourth Proportional to 1,018,796,544.21, 1,405,930,779.51 and 572,761,895.66

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Solution

The fourth proportional to 1,018,796,544.21, 1,405,930,779.51 and 572,761,895.66 is: 790,406,664.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,796,544.21 : 1,405,930,779.51 = 572,761,895.66 : x
  2. Step 2: Convert to fraction form
    1,018,796,544.21/1,405,930,779.51 = 572,761,895.66/x
  3. Step 3: Cross multiply
    1,018,796,544.21x = 1,405,930,779.51 × 572,761,895.66
  4. Step 4: Simplify right side
    1,018,796,544.21x = 805,263,578,442,403,968
  5. Step 5: Solve for x
    x = 805,263,578,442,403,968/1,018,796,544.21
  6. Step 6: Final answer
    x = 790,406,664.63

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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.