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Finding the Fourth Proportional to 978,844.80, 1,350,815.04 and 549,134.16

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Solution

The fourth proportional to 978,844.80, 1,350,815.04 and 549,134.16 is: 757,810.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,844.80 : 1,350,815.04 = 549,134.16 : x
  2. Step 2: Convert to fraction form
    978,844.80/1,350,815.04 = 549,134.16/x
  3. Step 3: Cross multiply
    978,844.80x = 1,350,815.04 × 549,134.16
  4. Step 4: Simplify right side
    978,844.80x = 741,778,682,305.77
  5. Step 5: Solve for x
    x = 741,778,682,305.77/978,844.80
  6. Step 6: Final answer
    x = 757,810.31

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1.5x scale

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.