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Finding the Fourth Proportional to 911,648,421.76, 1,258,508,596 and 610,751,841.68

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Solution

The fourth proportional to 911,648,421.76, 1,258,508,596 and 610,751,841.68 is: 843,128,145.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,648,421.76 : 1,258,508,596 = 610,751,841.68 : x
  2. Step 2: Convert to fraction form
    911,648,421.76/1,258,508,596 = 610,751,841.68/x
  3. Step 3: Cross multiply
    911,648,421.76x = 1,258,508,596 × 610,751,841.68
  4. Step 4: Simplify right side
    911,648,421.76x = 768,636,442,777,111,040
  5. Step 5: Solve for x
    x = 768,636,442,777,111,040/911,648,421.76
  6. Step 6: Final answer
    x = 843,128,145.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.