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Finding the Fourth Proportional to 606,548,019.40, 909,822,029.10 and 218,430,752.20

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Solution

The fourth proportional to 606,548,019.40, 909,822,029.10 and 218,430,752.20 is: 327,646,128.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,548,019.40 : 909,822,029.10 = 218,430,752.20 : x
  2. Step 2: Convert to fraction form
    606,548,019.40/909,822,029.10 = 218,430,752.20/x
  3. Step 3: Cross multiply
    606,548,019.40x = 909,822,029.10 × 218,430,752.20
  4. Step 4: Simplify right side
    606,548,019.40x = 198,733,110,184,443,296
  5. Step 5: Solve for x
    x = 198,733,110,184,443,296/606,548,019.40
  6. Step 6: Final answer
    x = 327,646,128.30

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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.