Home / 991,468.60-1,368,223.04-561,830.84

Finding the Fourth Proportional to 991,468.60, 1,368,223.04 and 561,830.84

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Solution

The fourth proportional to 991,468.60, 1,368,223.04 and 561,830.84 is: 775,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,468.60 : 1,368,223.04 = 561,830.84 : x
  2. Step 2: Convert to fraction form
    991,468.60/1,368,223.04 = 561,830.84/x
  3. Step 3: Cross multiply
    991,468.60x = 1,368,223.04 × 561,830.84
  4. Step 4: Simplify right side
    991,468.60x = 768,709,899,870.55
  5. Step 5: Solve for x
    x = 768,709,899,870.55/991,468.60
  6. Step 6: Final answer
    x = 775,324.50

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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.