Home / 1,187,807.20-1,778,211.60-788,898.40

Finding the Fourth Proportional to 1,187,807.20, 1,778,211.60 and 788,898.40

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Solution

The fourth proportional to 1,187,807.20, 1,778,211.60 and 788,898.40 is: 1,181,023.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,807.20 : 1,778,211.60 = 788,898.40 : x
  2. Step 2: Convert to fraction form
    1,187,807.20/1,778,211.60 = 788,898.40/x
  3. Step 3: Cross multiply
    1,187,807.20x = 1,778,211.60 × 788,898.40
  4. Step 4: Simplify right side
    1,187,807.20x = 1,402,828,286,101.44
  5. Step 5: Solve for x
    x = 1,402,828,286,101.44/1,187,807.20
  6. Step 6: Final answer
    x = 1,181,023.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.