Home / 435,543,518.88-653,410,940.40-128,811,718.80

Finding the Fourth Proportional to 435,543,518.88, 653,410,940.40 and 128,811,718.80

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Solution

The fourth proportional to 435,543,518.88, 653,410,940.40 and 128,811,718.80 is: 193,245,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,543,518.88 : 653,410,940.40 = 128,811,718.80 : x
  2. Step 2: Convert to fraction form
    435,543,518.88/653,410,940.40 = 128,811,718.80/x
  3. Step 3: Cross multiply
    435,543,518.88x = 653,410,940.40 × 128,811,718.80
  4. Step 4: Simplify right side
    435,543,518.88x = 84,166,986,315,648,352
  5. Step 5: Solve for x
    x = 84,166,986,315,648,352/435,543,518.88
  6. Step 6: Final answer
    x = 193,245,870.20

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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.