Home / 631,931.30-872,065.44-345,451.34

Finding the Fourth Proportional to 631,931.30, 872,065.44 and 345,451.34

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Solution

The fourth proportional to 631,931.30, 872,065.44 and 345,451.34 is: 476,722.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,931.30 : 872,065.44 = 345,451.34 : x
  2. Step 2: Convert to fraction form
    631,931.30/872,065.44 = 345,451.34/x
  3. Step 3: Cross multiply
    631,931.30x = 872,065.44 × 345,451.34
  4. Step 4: Simplify right side
    631,931.30x = 301,256,174,815.69
  5. Step 5: Solve for x
    x = 301,256,174,815.69/631,931.30
  6. Step 6: Final answer
    x = 476,722.98

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Double scale
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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.