Home / 515,885.04-711,922.74-286,442.77

Finding the Fourth Proportional to 515,885.04, 711,922.74 and 286,442.77

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Solution

The fourth proportional to 515,885.04, 711,922.74 and 286,442.77 is: 395,291.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,885.04 : 711,922.74 = 286,442.77 : x
  2. Step 2: Convert to fraction form
    515,885.04/711,922.74 = 286,442.77/x
  3. Step 3: Cross multiply
    515,885.04x = 711,922.74 × 286,442.77
  4. Step 4: Simplify right side
    515,885.04x = 203,925,121,671.59
  5. Step 5: Solve for x
    x = 203,925,121,671.59/515,885.04
  6. Step 6: Final answer
    x = 395,291.79

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1.5x scale

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.