Home / 763,383,487.20-1,145,075,230.80-645,138,520.80

Finding the Fourth Proportional to 763,383,487.20, 1,145,075,230.80 and 645,138,520.80

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Solution

The fourth proportional to 763,383,487.20, 1,145,075,230.80 and 645,138,520.80 is: 967,707,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,383,487.20 : 1,145,075,230.80 = 645,138,520.80 : x
  2. Step 2: Convert to fraction form
    763,383,487.20/1,145,075,230.80 = 645,138,520.80/x
  3. Step 3: Cross multiply
    763,383,487.20x = 1,145,075,230.80 × 645,138,520.80
  4. Step 4: Simplify right side
    763,383,487.20x = 738,732,140,603,030,528
  5. Step 5: Solve for x
    x = 738,732,140,603,030,528/763,383,487.20
  6. Step 6: Final answer
    x = 967,707,781.20

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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.