Home / 412,827.20-619,240.80-390,017.60

Finding the Fourth Proportional to 412,827.20, 619,240.80 and 390,017.60

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Solution

The fourth proportional to 412,827.20, 619,240.80 and 390,017.60 is: 585,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,827.20 : 619,240.80 = 390,017.60 : x
  2. Step 2: Convert to fraction form
    412,827.20/619,240.80 = 390,017.60/x
  3. Step 3: Cross multiply
    412,827.20x = 619,240.80 × 390,017.60
  4. Step 4: Simplify right side
    412,827.20x = 241,514,810,638.08
  5. Step 5: Solve for x
    x = 241,514,810,638.08/412,827.20
  6. Step 6: Final answer
    x = 585,026.40

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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.