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Finding the Fourth Proportional to 652,213.80, 978,320.70 and 562,012.20

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Solution

The fourth proportional to 652,213.80, 978,320.70 and 562,012.20 is: 843,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,213.80 : 978,320.70 = 562,012.20 : x
  2. Step 2: Convert to fraction form
    652,213.80/978,320.70 = 562,012.20/x
  3. Step 3: Cross multiply
    652,213.80x = 978,320.70 × 562,012.20
  4. Step 4: Simplify right side
    652,213.80x = 549,828,168,912.54
  5. Step 5: Solve for x
    x = 549,828,168,912.54/652,213.80
  6. Step 6: Final answer
    x = 843,018.30

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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.