Home / 1,294,886.40-1,786,950.72-721,962.24

Finding the Fourth Proportional to 1,294,886.40, 1,786,950.72 and 721,962.24

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Solution

The fourth proportional to 1,294,886.40, 1,786,950.72 and 721,962.24 is: 996,312.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,886.40 : 1,786,950.72 = 721,962.24 : x
  2. Step 2: Convert to fraction form
    1,294,886.40/1,786,950.72 = 721,962.24/x
  3. Step 3: Cross multiply
    1,294,886.40x = 1,786,950.72 × 721,962.24
  4. Step 4: Simplify right side
    1,294,886.40x = 1,290,110,944,580.81
  5. Step 5: Solve for x
    x = 1,290,110,944,580.81/1,294,886.40
  6. Step 6: Final answer
    x = 996,312.07

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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.