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Finding the Fourth Proportional to 648,283.20, 894,876 and 487,602.26

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Solution

The fourth proportional to 648,283.20, 894,876 and 487,602.26 is: 673,075.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,283.20 : 894,876 = 487,602.26 : x
  2. Step 2: Convert to fraction form
    648,283.20/894,876 = 487,602.26/x
  3. Step 3: Cross multiply
    648,283.20x = 894,876 × 487,602.26
  4. Step 4: Simplify right side
    648,283.20x = 436,343,560,019.76
  5. Step 5: Solve for x
    x = 436,343,560,019.76/648,283.20
  6. Step 6: Final answer
    x = 673,075.53

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1.5x scale

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.