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Finding the Fourth Proportional to 978,407.46, 1,350,266.16 and 564,961.70

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Solution

The fourth proportional to 978,407.46, 1,350,266.16 and 564,961.70 is: 779,684.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,407.46 : 1,350,266.16 = 564,961.70 : x
  2. Step 2: Convert to fraction form
    978,407.46/1,350,266.16 = 564,961.70/x
  3. Step 3: Cross multiply
    978,407.46x = 1,350,266.16 × 564,961.70
  4. Step 4: Simplify right side
    978,407.46x = 762,848,658,454.74
  5. Step 5: Solve for x
    x = 762,848,658,454.74/978,407.46
  6. Step 6: Final answer
    x = 779,684.02

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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.