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Finding the Fourth Proportional to 1,328,616,205.80, 1,992,924,308.70 and 708,743,423.40

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Solution

The fourth proportional to 1,328,616,205.80, 1,992,924,308.70 and 708,743,423.40 is: 1,063,115,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,616,205.80 : 1,992,924,308.70 = 708,743,423.40 : x
  2. Step 2: Convert to fraction form
    1,328,616,205.80/1,992,924,308.70 = 708,743,423.40/x
  3. Step 3: Cross multiply
    1,328,616,205.80x = 1,992,924,308.70 × 708,743,423.40
  4. Step 4: Simplify right side
    1,328,616,205.80x = 1,412,471,997,125,116,416
  5. Step 5: Solve for x
    x = 1,412,471,997,125,116,416/1,328,616,205.80
  6. Step 6: Final answer
    x = 1,063,115,135.10

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Double scale
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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.