Home / 1,390,419.75-1,918,779.26-754,515.75

Finding the Fourth Proportional to 1,390,419.75, 1,918,779.26 and 754,515.75

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Solution

The fourth proportional to 1,390,419.75, 1,918,779.26 and 754,515.75 is: 1,041,231.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,419.75 : 1,918,779.26 = 754,515.75 : x
  2. Step 2: Convert to fraction form
    1,390,419.75/1,918,779.26 = 754,515.75/x
  3. Step 3: Cross multiply
    1,390,419.75x = 1,918,779.26 × 754,515.75
  4. Step 4: Simplify right side
    1,390,419.75x = 1,447,749,172,443.35
  5. Step 5: Solve for x
    x = 1,447,749,172,443.35/1,390,419.75
  6. Step 6: Final answer
    x = 1,041,231.74

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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.