Home / 991,155.40-1,486,789.62-281,127.64

Finding the Fourth Proportional to 991,155.40, 1,486,789.62 and 281,127.64

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Solution

The fourth proportional to 991,155.40, 1,486,789.62 and 281,127.64 is: 421,707.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,155.40 : 1,486,789.62 = 281,127.64 : x
  2. Step 2: Convert to fraction form
    991,155.40/1,486,789.62 = 281,127.64/x
  3. Step 3: Cross multiply
    991,155.40x = 1,486,789.62 × 281,127.64
  4. Step 4: Simplify right side
    991,155.40x = 417,977,657,047.10
  5. Step 5: Solve for x
    x = 417,977,657,047.10/991,155.40
  6. Step 6: Final answer
    x = 421,707.49

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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.