Home / 991,894.68-1,368,829.64-556,408.55

Finding the Fourth Proportional to 991,894.68, 1,368,829.64 and 556,408.55

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Solution

The fourth proportional to 991,894.68, 1,368,829.64 and 556,408.55 is: 767,852.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,894.68 : 1,368,829.64 = 556,408.55 : x
  2. Step 2: Convert to fraction form
    991,894.68/1,368,829.64 = 556,408.55/x
  3. Step 3: Cross multiply
    991,894.68x = 1,368,829.64 × 556,408.55
  4. Step 4: Simplify right side
    991,894.68x = 761,628,520,002.52
  5. Step 5: Solve for x
    x = 761,628,520,002.52/991,894.68
  6. Step 6: Final answer
    x = 767,852.21

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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.