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Finding the Fourth Proportional to 978,844.34, 1,350,814.41 and 549,133.70

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Solution

The fourth proportional to 978,844.34, 1,350,814.41 and 549,133.70 is: 757,809.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,844.34 : 1,350,814.41 = 549,133.70 : x
  2. Step 2: Convert to fraction form
    978,844.34/1,350,814.41 = 549,133.70/x
  3. Step 3: Cross multiply
    978,844.34x = 1,350,814.41 × 549,133.70
  4. Step 4: Simplify right side
    978,844.34x = 741,777,712,258.47
  5. Step 5: Solve for x
    x = 741,777,712,258.47/978,844.34
  6. Step 6: Final answer
    x = 757,809.67

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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.