Home / 978,845.09-1,350,815.45-549,134.45

Finding the Fourth Proportional to 978,845.09, 1,350,815.45 and 549,134.45

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Solution

The fourth proportional to 978,845.09, 1,350,815.45 and 549,134.45 is: 757,810.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,845.09 : 1,350,815.45 = 549,134.45 : x
  2. Step 2: Convert to fraction form
    978,845.09/1,350,815.45 = 549,134.45/x
  3. Step 3: Cross multiply
    978,845.09x = 1,350,815.45 × 549,134.45
  4. Step 4: Simplify right side
    978,845.09x = 741,779,299,818.62
  5. Step 5: Solve for x
    x = 741,779,299,818.62/978,845.09
  6. Step 6: Final answer
    x = 757,810.72

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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.