Home / 1,490,419.40-2,237,112.30-691,881.80

Finding the Fourth Proportional to 1,490,419.40, 2,237,112.30 and 691,881.80

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Solution

The fourth proportional to 1,490,419.40, 2,237,112.30 and 691,881.80 is: 1,038,511.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,419.40 : 2,237,112.30 = 691,881.80 : x
  2. Step 2: Convert to fraction form
    1,490,419.40/2,237,112.30 = 691,881.80/x
  3. Step 3: Cross multiply
    1,490,419.40x = 2,237,112.30 × 691,881.80
  4. Step 4: Simplify right side
    1,490,419.40x = 1,547,817,284,926.14
  5. Step 5: Solve for x
    x = 1,547,817,284,926.14/1,490,419.40
  6. Step 6: Final answer
    x = 1,038,511.23

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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.