Home / 612,984.72-918,698.40-275,665.08

Finding the Fourth Proportional to 612,984.72, 918,698.40 and 275,665.08

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Solution

The fourth proportional to 612,984.72, 918,698.40 and 275,665.08 is: 413,147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,984.72 : 918,698.40 = 275,665.08 : x
  2. Step 2: Convert to fraction form
    612,984.72/918,698.40 = 275,665.08/x
  3. Step 3: Cross multiply
    612,984.72x = 918,698.40 × 275,665.08
  4. Step 4: Simplify right side
    612,984.72x = 253,253,067,931.87
  5. Step 5: Solve for x
    x = 253,253,067,931.87/612,984.72
  6. Step 6: Final answer
    x = 413,147.44

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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.