Home / 678,632.65-1,018,121.27-314,157.01

Finding the Fourth Proportional to 678,632.65, 1,018,121.27 and 314,157.01

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Solution

The fourth proportional to 678,632.65, 1,018,121.27 and 314,157.01 is: 471,315.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,632.65 : 1,018,121.27 = 314,157.01 : x
  2. Step 2: Convert to fraction form
    678,632.65/1,018,121.27 = 314,157.01/x
  3. Step 3: Cross multiply
    678,632.65x = 1,018,121.27 × 314,157.01
  4. Step 4: Simplify right side
    678,632.65x = 319,849,934,000.60
  5. Step 5: Solve for x
    x = 319,849,934,000.60/678,632.65
  6. Step 6: Final answer
    x = 471,315.27

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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.