Home / 953,843.40-1,430,327.70-421,090.20

Finding the Fourth Proportional to 953,843.40, 1,430,327.70 and 421,090.20

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Solution

The fourth proportional to 953,843.40, 1,430,327.70 and 421,090.20 is: 631,442.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    953,843.40 : 1,430,327.70 = 421,090.20 : x
  2. Step 2: Convert to fraction form
    953,843.40/1,430,327.70 = 421,090.20/x
  3. Step 3: Cross multiply
    953,843.40x = 1,430,327.70 × 421,090.20
  4. Step 4: Simplify right side
    953,843.40x = 602,296,977,258.54
  5. Step 5: Solve for x
    x = 602,296,977,258.54/953,843.40
  6. Step 6: Final answer
    x = 631,442.20

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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.