Home / 647,176.20-971,340.30-380,603.40

Finding the Fourth Proportional to 647,176.20, 971,340.30 and 380,603.40

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Solution

The fourth proportional to 647,176.20, 971,340.30 and 380,603.40 is: 571,243.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,176.20 : 971,340.30 = 380,603.40 : x
  2. Step 2: Convert to fraction form
    647,176.20/971,340.30 = 380,603.40/x
  3. Step 3: Cross multiply
    647,176.20x = 971,340.30 × 380,603.40
  4. Step 4: Simplify right side
    647,176.20x = 369,695,420,737.02
  5. Step 5: Solve for x
    x = 369,695,420,737.02/647,176.20
  6. Step 6: Final answer
    x = 571,243.84

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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.