Home / 12,478,645.30-18,717,967.95-4,391,556.70

Finding the Fourth Proportional to 12,478,645.30, 18,717,967.95 and 4,391,556.70

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Solution

The fourth proportional to 12,478,645.30, 18,717,967.95 and 4,391,556.70 is: 6,587,335.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,645.30 : 18,717,967.95 = 4,391,556.70 : x
  2. Step 2: Convert to fraction form
    12,478,645.30/18,717,967.95 = 4,391,556.70/x
  3. Step 3: Cross multiply
    12,478,645.30x = 18,717,967.95 × 4,391,556.70
  4. Step 4: Simplify right side
    12,478,645.30x = 82,201,017,561,207.77
  5. Step 5: Solve for x
    x = 82,201,017,561,207.77/12,478,645.30
  6. Step 6: Final answer
    x = 6,587,335.05

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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.