Home / 1,211,178.79-1,815,054.38-671,672.39

Finding the Fourth Proportional to 1,211,178.79, 1,815,054.38 and 671,672.39

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Solution

The fourth proportional to 1,211,178.79, 1,815,054.38 and 671,672.39 is: 1,006,558.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,178.79 : 1,815,054.38 = 671,672.39 : x
  2. Step 2: Convert to fraction form
    1,211,178.79/1,815,054.38 = 671,672.39/x
  3. Step 3: Cross multiply
    1,211,178.79x = 1,815,054.38 × 671,672.39
  4. Step 4: Simplify right side
    1,211,178.79x = 1,219,121,903,479.71
  5. Step 5: Solve for x
    x = 1,219,121,903,479.71/1,211,178.79
  6. Step 6: Final answer
    x = 1,006,558.17

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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.