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Finding the Fourth Proportional to 886,465,533.90, 1,329,698,300.85 and 838,848,420.30

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Solution

The fourth proportional to 886,465,533.90, 1,329,698,300.85 and 838,848,420.30 is: 1,258,272,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,465,533.90 : 1,329,698,300.85 = 838,848,420.30 : x
  2. Step 2: Convert to fraction form
    886,465,533.90/1,329,698,300.85 = 838,848,420.30/x
  3. Step 3: Cross multiply
    886,465,533.90x = 1,329,698,300.85 × 838,848,420.30
  4. Step 4: Simplify right side
    886,465,533.90x = 1,115,415,319,143,616,512
  5. Step 5: Solve for x
    x = 1,115,415,319,143,616,512/886,465,533.90
  6. Step 6: Final answer
    x = 1,258,272,630.45

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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.