Home / 1,216,779.69-1,679,146.17-672,938.40

Finding the Fourth Proportional to 1,216,779.69, 1,679,146.17 and 672,938.40

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Solution

The fourth proportional to 1,216,779.69, 1,679,146.17 and 672,938.40 is: 928,649.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,779.69 : 1,679,146.17 = 672,938.40 : x
  2. Step 2: Convert to fraction form
    1,216,779.69/1,679,146.17 = 672,938.40/x
  3. Step 3: Cross multiply
    1,216,779.69x = 1,679,146.17 × 672,938.40
  4. Step 4: Simplify right side
    1,216,779.69x = 1,129,961,937,005.93
  5. Step 5: Solve for x
    x = 1,129,961,937,005.93/1,216,779.69
  6. Step 6: Final answer
    x = 928,649.57

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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.