Home / 1,238,968.76-1,710,377.58-830,921.36

Finding the Fourth Proportional to 1,238,968.76, 1,710,377.58 and 830,921.36

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Solution

The fourth proportional to 1,238,968.76, 1,710,377.58 and 830,921.36 is: 1,147,074.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,968.76 : 1,710,377.58 = 830,921.36 : x
  2. Step 2: Convert to fraction form
    1,238,968.76/1,710,377.58 = 830,921.36/x
  3. Step 3: Cross multiply
    1,238,968.76x = 1,710,377.58 × 830,921.36
  4. Step 4: Simplify right side
    1,238,968.76x = 1,421,189,264,887.11
  5. Step 5: Solve for x
    x = 1,421,189,264,887.11/1,238,968.76
  6. Step 6: Final answer
    x = 1,147,074.33

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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.