Home / 664,031.72-916,271.28-377,520.14

Finding the Fourth Proportional to 664,031.72, 916,271.28 and 377,520.14

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Solution

The fourth proportional to 664,031.72, 916,271.28 and 377,520.14 is: 520,925.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,031.72 : 916,271.28 = 377,520.14 : x
  2. Step 2: Convert to fraction form
    664,031.72/916,271.28 = 377,520.14/x
  3. Step 3: Cross multiply
    664,031.72x = 916,271.28 × 377,520.14
  4. Step 4: Simplify right side
    664,031.72x = 345,910,861,903.58
  5. Step 5: Solve for x
    x = 345,910,861,903.58/664,031.72
  6. Step 6: Final answer
    x = 520,925.21

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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.