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Finding the Fourth Proportional to 665,943,265.40, 997,480,007.40 and 551,152,009.40

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Solution

The fourth proportional to 665,943,265.40, 997,480,007.40 and 551,152,009.40 is: 825,540,461.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,943,265.40 : 997,480,007.40 = 551,152,009.40 : x
  2. Step 2: Convert to fraction form
    665,943,265.40/997,480,007.40 = 551,152,009.40/x
  3. Step 3: Cross multiply
    665,943,265.40x = 997,480,007.40 × 551,152,009.40
  4. Step 4: Simplify right side
    665,943,265.40x = 549,763,110,414,836,864
  5. Step 5: Solve for x
    x = 549,763,110,414,836,864/665,943,265.40
  6. Step 6: Final answer
    x = 825,540,461.15

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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.