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Finding the Fourth Proportional to 528,362.34, 729,139.95 and 302,012.70

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Solution

The fourth proportional to 528,362.34, 729,139.95 and 302,012.70 is: 416,777.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,362.34 : 729,139.95 = 302,012.70 : x
  2. Step 2: Convert to fraction form
    528,362.34/729,139.95 = 302,012.70/x
  3. Step 3: Cross multiply
    528,362.34x = 729,139.95 × 302,012.70
  4. Step 4: Simplify right side
    528,362.34x = 220,209,524,977.37
  5. Step 5: Solve for x
    x = 220,209,524,977.37/528,362.34
  6. Step 6: Final answer
    x = 416,777.48

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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.