Home / 429,945.58-645,011.10-130,450.30

Finding the Fourth Proportional to 429,945.58, 645,011.10 and 130,450.30

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Solution

The fourth proportional to 429,945.58, 645,011.10 and 130,450.30 is: 195,703.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,945.58 : 645,011.10 = 130,450.30 : x
  2. Step 2: Convert to fraction form
    429,945.58/645,011.10 = 130,450.30/x
  3. Step 3: Cross multiply
    429,945.58x = 645,011.10 × 130,450.30
  4. Step 4: Simplify right side
    429,945.58x = 84,141,891,498.33
  5. Step 5: Solve for x
    x = 84,141,891,498.33/429,945.58
  6. Step 6: Final answer
    x = 195,703.59

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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.