Home / 1,238,985.45-1,710,400.73-830,938.05

Finding the Fourth Proportional to 1,238,985.45, 1,710,400.73 and 830,938.05

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Solution

The fourth proportional to 1,238,985.45, 1,710,400.73 and 830,938.05 is: 1,147,097.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,985.45 : 1,710,400.73 = 830,938.05 : x
  2. Step 2: Convert to fraction form
    1,238,985.45/1,710,400.73 = 830,938.05/x
  3. Step 3: Cross multiply
    1,238,985.45x = 1,710,400.73 × 830,938.05
  4. Step 4: Simplify right side
    1,238,985.45x = 1,421,237,043,150.09
  5. Step 5: Solve for x
    x = 1,421,237,043,150.09/1,238,985.45
  6. Step 6: Final answer
    x = 1,147,097.44

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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.