Home / 760,120.60-1,139,468.10-287,123.80

Finding the Fourth Proportional to 760,120.60, 1,139,468.10 and 287,123.80

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Solution

The fourth proportional to 760,120.60, 1,139,468.10 and 287,123.80 is: 430,416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,120.60 : 1,139,468.10 = 287,123.80 : x
  2. Step 2: Convert to fraction form
    760,120.60/1,139,468.10 = 287,123.80/x
  3. Step 3: Cross multiply
    760,120.60x = 1,139,468.10 × 287,123.80
  4. Step 4: Simplify right side
    760,120.60x = 327,168,410,850.78
  5. Step 5: Solve for x
    x = 327,168,410,850.78/760,120.60
  6. Step 6: Final answer
    x = 430,416.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.