Home / 991,148.40-1,486,779.10-281,120.63

Finding the Fourth Proportional to 991,148.40, 1,486,779.10 and 281,120.63

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Solution

The fourth proportional to 991,148.40, 1,486,779.10 and 281,120.63 is: 421,696.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,148.40 : 1,486,779.10 = 281,120.63 : x
  2. Step 2: Convert to fraction form
    991,148.40/1,486,779.10 = 281,120.63/x
  3. Step 3: Cross multiply
    991,148.40x = 1,486,779.10 × 281,120.63
  4. Step 4: Simplify right side
    991,148.40x = 417,964,269,126.14
  5. Step 5: Solve for x
    x = 417,964,269,126.14/991,148.40
  6. Step 6: Final answer
    x = 421,696.96

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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.