Home / 1,139,859.09-1,572,999.80-623,603.66

Finding the Fourth Proportional to 1,139,859.09, 1,572,999.80 and 623,603.66

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Solution

The fourth proportional to 1,139,859.09, 1,572,999.80 and 623,603.66 is: 860,569.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,859.09 : 1,572,999.80 = 623,603.66 : x
  2. Step 2: Convert to fraction form
    1,139,859.09/1,572,999.80 = 623,603.66/x
  3. Step 3: Cross multiply
    1,139,859.09x = 1,572,999.80 × 623,603.66
  4. Step 4: Simplify right side
    1,139,859.09x = 980,928,421,476.25
  5. Step 5: Solve for x
    x = 980,928,421,476.25/1,139,859.09
  6. Step 6: Final answer
    x = 860,569.90

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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.