Home / 422,477,820.40-633,716,730.60-407,172,319.60

Finding the Fourth Proportional to 422,477,820.40, 633,716,730.60 and 407,172,319.60

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Solution

The fourth proportional to 422,477,820.40, 633,716,730.60 and 407,172,319.60 is: 610,758,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,477,820.40 : 633,716,730.60 = 407,172,319.60 : x
  2. Step 2: Convert to fraction form
    422,477,820.40/633,716,730.60 = 407,172,319.60/x
  3. Step 3: Cross multiply
    422,477,820.40x = 633,716,730.60 × 407,172,319.60
  4. Step 4: Simplify right side
    422,477,820.40x = 258,031,911,167,730,336
  5. Step 5: Solve for x
    x = 258,031,911,167,730,336/422,477,820.40
  6. Step 6: Final answer
    x = 610,758,479.40

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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.