Home / 810,691,590.49-1,118,756,043.40-439,413,873.37

Finding the Fourth Proportional to 810,691,590.49, 1,118,756,043.40 and 439,413,873.37

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Solution

The fourth proportional to 810,691,590.49, 1,118,756,043.40 and 439,413,873.37 is: 606,392,038.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,691,590.49 : 1,118,756,043.40 = 439,413,873.37 : x
  2. Step 2: Convert to fraction form
    810,691,590.49/1,118,756,043.40 = 439,413,873.37/x
  3. Step 3: Cross multiply
    810,691,590.49x = 1,118,756,043.40 × 439,413,873.37
  4. Step 4: Simplify right side
    810,691,590.49x = 491,596,926,380,896,128
  5. Step 5: Solve for x
    x = 491,596,926,380,896,128/810,691,590.49
  6. Step 6: Final answer
    x = 606,392,038.79

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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.