Home / 786,790,801.56-1,085,913,468.54-469,271,423.64

Finding the Fourth Proportional to 786,790,801.56, 1,085,913,468.54 and 469,271,423.64

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Solution

The fourth proportional to 786,790,801.56, 1,085,913,468.54 and 469,271,423.64 is: 647,679,355.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,790,801.56 : 1,085,913,468.54 = 469,271,423.64 : x
  2. Step 2: Convert to fraction form
    786,790,801.56/1,085,913,468.54 = 469,271,423.64/x
  3. Step 3: Cross multiply
    786,790,801.56x = 1,085,913,468.54 × 469,271,423.64
  4. Step 4: Simplify right side
    786,790,801.56x = 509,588,159,331,616,128
  5. Step 5: Solve for x
    x = 509,588,159,331,616,128/786,790,801.56
  6. Step 6: Final answer
    x = 647,679,355.58

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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.