Home / 786,790,813.56-1,085,913,485.10-469,271,435.64

Finding the Fourth Proportional to 786,790,813.56, 1,085,913,485.10 and 469,271,435.64

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Solution

The fourth proportional to 786,790,813.56, 1,085,913,485.10 and 469,271,435.64 is: 647,679,372.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,790,813.56 : 1,085,913,485.10 = 469,271,435.64 : x
  2. Step 2: Convert to fraction form
    786,790,813.56/1,085,913,485.10 = 469,271,435.64/x
  3. Step 3: Cross multiply
    786,790,813.56x = 1,085,913,485.10 × 469,271,435.64
  4. Step 4: Simplify right side
    786,790,813.56x = 509,588,180,133,712,704
  5. Step 5: Solve for x
    x = 509,588,180,133,712,704/786,790,813.56
  6. Step 6: Final answer
    x = 647,679,372.14

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Double scale
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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.