Home / 3,119,300.40-4,678,075.80-990,037.20

Finding the Fourth Proportional to 3,119,300.40, 4,678,075.80 and 990,037.20

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Solution

The fourth proportional to 3,119,300.40, 4,678,075.80 and 990,037.20 is: 1,484,778.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,300.40 : 4,678,075.80 = 990,037.20 : x
  2. Step 2: Convert to fraction form
    3,119,300.40/4,678,075.80 = 990,037.20/x
  3. Step 3: Cross multiply
    3,119,300.40x = 4,678,075.80 × 990,037.20
  4. Step 4: Simplify right side
    3,119,300.40x = 4,631,469,066,419.76
  5. Step 5: Solve for x
    x = 4,631,469,066,419.76/3,119,300.40
  6. Step 6: Final answer
    x = 1,484,778.15

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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.