Home / 678,631.65-1,018,119.77-314,156.01

Finding the Fourth Proportional to 678,631.65, 1,018,119.77 and 314,156.01

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Solution

The fourth proportional to 678,631.65, 1,018,119.77 and 314,156.01 is: 471,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,631.65 : 1,018,119.77 = 314,156.01 : x
  2. Step 2: Convert to fraction form
    678,631.65/1,018,119.77 = 314,156.01/x
  3. Step 3: Cross multiply
    678,631.65x = 1,018,119.77 × 314,156.01
  4. Step 4: Simplify right side
    678,631.65x = 319,848,448,070.57
  5. Step 5: Solve for x
    x = 319,848,448,070.57/678,631.65
  6. Step 6: Final answer
    x = 471,313.78

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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.