Home / 990,121.95-1,484,945.12-457,130.88

Finding the Fourth Proportional to 990,121.95, 1,484,945.12 and 457,130.88

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Solution

The fourth proportional to 990,121.95, 1,484,945.12 and 457,130.88 is: 685,586.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,121.95 : 1,484,945.12 = 457,130.88 : x
  2. Step 2: Convert to fraction form
    990,121.95/1,484,945.12 = 457,130.88/x
  3. Step 3: Cross multiply
    990,121.95x = 1,484,945.12 × 457,130.88
  4. Step 4: Simplify right side
    990,121.95x = 678,814,267,171.65
  5. Step 5: Solve for x
    x = 678,814,267,171.65/990,121.95
  6. Step 6: Final answer
    x = 685,586.53

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1.5x scale

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.