Home / 728,005.40-1,091,570.70-373,711.40

Finding the Fourth Proportional to 728,005.40, 1,091,570.70 and 373,711.40

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Solution

The fourth proportional to 728,005.40, 1,091,570.70 and 373,711.40 is: 560,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,005.40 : 1,091,570.70 = 373,711.40 : x
  2. Step 2: Convert to fraction form
    728,005.40/1,091,570.70 = 373,711.40/x
  3. Step 3: Cross multiply
    728,005.40x = 1,091,570.70 × 373,711.40
  4. Step 4: Simplify right side
    728,005.40x = 407,932,414,495.98
  5. Step 5: Solve for x
    x = 407,932,414,495.98/728,005.40
  6. Step 6: Final answer
    x = 560,342.57

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1.5x scale

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.