Home / 786,784,796.20-1,085,905,143.30-469,265,392.36

Finding the Fourth Proportional to 786,784,796.20, 1,085,905,143.30 and 469,265,392.36

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Solution

The fourth proportional to 786,784,796.20, 1,085,905,143.30 and 469,265,392.36 is: 647,671,009.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,784,796.20 : 1,085,905,143.30 = 469,265,392.36 : x
  2. Step 2: Convert to fraction form
    786,784,796.20/1,085,905,143.30 = 469,265,392.36/x
  3. Step 3: Cross multiply
    786,784,796.20x = 1,085,905,143.30 × 469,265,392.36
  4. Step 4: Simplify right side
    786,784,796.20x = 509,577,703,136,416,512
  5. Step 5: Solve for x
    x = 509,577,703,136,416,512/786,784,796.20
  6. Step 6: Final answer
    x = 647,671,009.40

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Double scale
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1.5x scale

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.