Home / 1,316,187.60-1,970,344.80-783,434.40

Finding the Fourth Proportional to 1,316,187.60, 1,970,344.80 and 783,434.40

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Solution

The fourth proportional to 1,316,187.60, 1,970,344.80 and 783,434.40 is: 1,172,808.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,187.60 : 1,970,344.80 = 783,434.40 : x
  2. Step 2: Convert to fraction form
    1,316,187.60/1,970,344.80 = 783,434.40/x
  3. Step 3: Cross multiply
    1,316,187.60x = 1,970,344.80 × 783,434.40
  4. Step 4: Simplify right side
    1,316,187.60x = 1,543,635,896,181.12
  5. Step 5: Solve for x
    x = 1,543,635,896,181.12/1,316,187.60
  6. Step 6: Final answer
    x = 1,172,808.42

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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.