Home / 637,466,484.76-879,694,806.72-355,220,821.72

Finding the Fourth Proportional to 637,466,484.76, 879,694,806.72 and 355,220,821.72

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Solution

The fourth proportional to 637,466,484.76, 879,694,806.72 and 355,220,821.72 is: 490,199,751.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,466,484.76 : 879,694,806.72 = 355,220,821.72 : x
  2. Step 2: Convert to fraction form
    637,466,484.76/879,694,806.72 = 355,220,821.72/x
  3. Step 3: Cross multiply
    637,466,484.76x = 879,694,806.72 × 355,220,821.72
  4. Step 4: Simplify right side
    637,466,484.76x = 312,485,912,105,895,040
  5. Step 5: Solve for x
    x = 312,485,912,105,895,040/637,466,484.76
  6. Step 6: Final answer
    x = 490,199,751.01

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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.