Home / 631,643.04-871,678.80-345,175.20

Finding the Fourth Proportional to 631,643.04, 871,678.80 and 345,175.20

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Solution

The fourth proportional to 631,643.04, 871,678.80 and 345,175.20 is: 476,348.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,643.04 : 871,678.80 = 345,175.20 : x
  2. Step 2: Convert to fraction form
    631,643.04/871,678.80 = 345,175.20/x
  3. Step 3: Cross multiply
    631,643.04x = 871,678.80 × 345,175.20
  4. Step 4: Simplify right side
    631,643.04x = 300,881,904,125.76
  5. Step 5: Solve for x
    x = 300,881,904,125.76/631,643.04
  6. Step 6: Final answer
    x = 476,348.01

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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.