Home / 631,522.18-871,490.31-345,036.10

Finding the Fourth Proportional to 631,522.18, 871,490.31 and 345,036.10

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Solution

The fourth proportional to 631,522.18, 871,490.31 and 345,036.10 is: 476,144.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,522.18 : 871,490.31 = 345,036.10 : x
  2. Step 2: Convert to fraction form
    631,522.18/871,490.31 = 345,036.10/x
  3. Step 3: Cross multiply
    631,522.18x = 871,490.31 × 345,036.10
  4. Step 4: Simplify right side
    631,522.18x = 300,695,617,750.19
  5. Step 5: Solve for x
    x = 300,695,617,750.19/631,522.18
  6. Step 6: Final answer
    x = 476,144.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.