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Finding the Fourth Proportional to 985,661.70, 1,478,492.55 and 985,661.70

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Solution

The fourth proportional to 985,661.70, 1,478,492.55 and 985,661.70 is: 1,478,492.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,661.70 : 1,478,492.55 = 985,661.70 : x
  2. Step 2: Convert to fraction form
    985,661.70/1,478,492.55 = 985,661.70/x
  3. Step 3: Cross multiply
    985,661.70x = 1,478,492.55 × 985,661.70
  4. Step 4: Simplify right side
    985,661.70x = 1,457,293,480,270.34
  5. Step 5: Solve for x
    x = 1,457,293,480,270.34/985,661.70
  6. Step 6: Final answer
    x = 1,478,492.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.