Home / 863,136,011.80-1,294,704,017.70-378,461,819.80

Finding the Fourth Proportional to 863,136,011.80, 1,294,704,017.70 and 378,461,819.80

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Solution

The fourth proportional to 863,136,011.80, 1,294,704,017.70 and 378,461,819.80 is: 567,692,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,136,011.80 : 1,294,704,017.70 = 378,461,819.80 : x
  2. Step 2: Convert to fraction form
    863,136,011.80/1,294,704,017.70 = 378,461,819.80/x
  3. Step 3: Cross multiply
    863,136,011.80x = 1,294,704,017.70 × 378,461,819.80
  4. Step 4: Simplify right side
    863,136,011.80x = 489,996,038,641,113,472
  5. Step 5: Solve for x
    x = 489,996,038,641,113,472/863,136,011.80
  6. Step 6: Final answer
    x = 567,692,729.70

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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.