Home / 1,287,458.08-1,776,609.52-803,994.40

Finding the Fourth Proportional to 1,287,458.08, 1,776,609.52 and 803,994.40

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Solution

The fourth proportional to 1,287,458.08, 1,776,609.52 and 803,994.40 is: 1,109,460.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,458.08 : 1,776,609.52 = 803,994.40 : x
  2. Step 2: Convert to fraction form
    1,287,458.08/1,776,609.52 = 803,994.40/x
  3. Step 3: Cross multiply
    1,287,458.08x = 1,776,609.52 × 803,994.40
  4. Step 4: Simplify right side
    1,287,458.08x = 1,428,384,105,066.69
  5. Step 5: Solve for x
    x = 1,428,384,105,066.69/1,287,458.08
  6. Step 6: Final answer
    x = 1,109,460.67

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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.