Home / 647,353,976.90-971,030,965.35-370,721,221.70

Finding the Fourth Proportional to 647,353,976.90, 971,030,965.35 and 370,721,221.70

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Solution

The fourth proportional to 647,353,976.90, 971,030,965.35 and 370,721,221.70 is: 556,081,832.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,353,976.90 : 971,030,965.35 = 370,721,221.70 : x
  2. Step 2: Convert to fraction form
    647,353,976.90/971,030,965.35 = 370,721,221.70/x
  3. Step 3: Cross multiply
    647,353,976.90x = 971,030,965.35 × 370,721,221.70
  4. Step 4: Simplify right side
    647,353,976.90x = 359,981,785,783,082,368
  5. Step 5: Solve for x
    x = 359,981,785,783,082,368/647,353,976.90
  6. Step 6: Final answer
    x = 556,081,832.55

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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.