Home / 1,215,130.86-1,676,978.69-671,314.19

Finding the Fourth Proportional to 1,215,130.86, 1,676,978.69 and 671,314.19

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Solution

The fourth proportional to 1,215,130.86, 1,676,978.69 and 671,314.19 is: 926,467.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,130.86 : 1,676,978.69 = 671,314.19 : x
  2. Step 2: Convert to fraction form
    1,215,130.86/1,676,978.69 = 671,314.19/x
  3. Step 3: Cross multiply
    1,215,130.86x = 1,676,978.69 × 671,314.19
  4. Step 4: Simplify right side
    1,215,130.86x = 1,125,779,579,183.15
  5. Step 5: Solve for x
    x = 1,125,779,579,183.15/1,215,130.86
  6. Step 6: Final answer
    x = 926,467.77

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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.