Home / 665,748.37-918,474.55-423,987.67

Finding the Fourth Proportional to 665,748.37, 918,474.55 and 423,987.67

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Solution

The fourth proportional to 665,748.37, 918,474.55 and 423,987.67 is: 584,938.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,748.37 : 918,474.55 = 423,987.67 : x
  2. Step 2: Convert to fraction form
    665,748.37/918,474.55 = 423,987.67/x
  3. Step 3: Cross multiply
    665,748.37x = 918,474.55 × 423,987.67
  4. Step 4: Simplify right side
    665,748.37x = 389,421,884,408.80
  5. Step 5: Solve for x
    x = 389,421,884,408.80/665,748.37
  6. Step 6: Final answer
    x = 584,938.55

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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.