Home / 1,222,330.64-1,686,784.08-678,464.96

Finding the Fourth Proportional to 1,222,330.64, 1,686,784.08 and 678,464.96

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Solution

The fourth proportional to 1,222,330.64, 1,686,784.08 and 678,464.96 is: 936,263.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,330.64 : 1,686,784.08 = 678,464.96 : x
  2. Step 2: Convert to fraction form
    1,222,330.64/1,686,784.08 = 678,464.96/x
  3. Step 3: Cross multiply
    1,222,330.64x = 1,686,784.08 × 678,464.96
  4. Step 4: Simplify right side
    1,222,330.64x = 1,144,423,893,365.84
  5. Step 5: Solve for x
    x = 1,144,423,893,365.84/1,222,330.64
  6. Step 6: Final answer
    x = 936,263.77

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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.