Home / 612,986.72-918,701.40-275,667.08

Finding the Fourth Proportional to 612,986.72, 918,701.40 and 275,667.08

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Solution

The fourth proportional to 612,986.72, 918,701.40 and 275,667.08 is: 413,150.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,986.72 : 918,701.40 = 275,667.08 : x
  2. Step 2: Convert to fraction form
    612,986.72/918,701.40 = 275,667.08/x
  3. Step 3: Cross multiply
    612,986.72x = 918,701.40 × 275,667.08
  4. Step 4: Simplify right side
    612,986.72x = 253,255,732,329.91
  5. Step 5: Solve for x
    x = 253,255,732,329.91/612,986.72
  6. Step 6: Final answer
    x = 413,150.44

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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.