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Finding the Fourth Proportional to 978,504.48, 1,350,345.60 and 548,775.45

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Solution

The fourth proportional to 978,504.48, 1,350,345.60 and 548,775.45 is: 757,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,504.48 : 1,350,345.60 = 548,775.45 : x
  2. Step 2: Convert to fraction form
    978,504.48/1,350,345.60 = 548,775.45/x
  3. Step 3: Cross multiply
    978,504.48x = 1,350,345.60 × 548,775.45
  4. Step 4: Simplify right side
    978,504.48x = 741,036,514,295.52
  5. Step 5: Solve for x
    x = 741,036,514,295.52/978,504.48
  6. Step 6: Final answer
    x = 757,315.40

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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.