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Finding the Fourth Proportional to 978,020.10, 1,465,280.55 and 603,605.70

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Solution

The fourth proportional to 978,020.10, 1,465,280.55 and 603,605.70 is: 904,328.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,020.10 : 1,465,280.55 = 603,605.70 : x
  2. Step 2: Convert to fraction form
    978,020.10/1,465,280.55 = 603,605.70/x
  3. Step 3: Cross multiply
    978,020.10x = 1,465,280.55 × 603,605.70
  4. Step 4: Simplify right side
    978,020.10x = 884,451,692,079.14
  5. Step 5: Solve for x
    x = 884,451,692,079.14/978,020.10
  6. Step 6: Final answer
    x = 904,328.75

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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.