Home / 1,210,611.40-1,670,520.10-745,391.40

Finding the Fourth Proportional to 1,210,611.40, 1,670,520.10 and 745,391.40

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Solution

The fourth proportional to 1,210,611.40, 1,670,520.10 and 745,391.40 is: 1,028,564.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,611.40 : 1,670,520.10 = 745,391.40 : x
  2. Step 2: Convert to fraction form
    1,210,611.40/1,670,520.10 = 745,391.40/x
  3. Step 3: Cross multiply
    1,210,611.40x = 1,670,520.10 × 745,391.40
  4. Step 4: Simplify right side
    1,210,611.40x = 1,245,191,316,067.14
  5. Step 5: Solve for x
    x = 1,245,191,316,067.14/1,210,611.40
  6. Step 6: Final answer
    x = 1,028,564.01

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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.