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Finding the Fourth Proportional to 434,028.80, 651,043.20 and 286,284.80

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Solution

The fourth proportional to 434,028.80, 651,043.20 and 286,284.80 is: 429,427.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,028.80 : 651,043.20 = 286,284.80 : x
  2. Step 2: Convert to fraction form
    434,028.80/651,043.20 = 286,284.80/x
  3. Step 3: Cross multiply
    434,028.80x = 651,043.20 × 286,284.80
  4. Step 4: Simplify right side
    434,028.80x = 186,383,772,303.36
  5. Step 5: Solve for x
    x = 186,383,772,303.36/434,028.80
  6. Step 6: Final answer
    x = 429,427.20

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Similar ratio
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1.5x scale

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.