Home / 686,518,278,180.70-947,333,645,823.80-397,506,043,850.40

Finding the Fourth Proportional to 686,518,278,180.70, 947,333,645,823.80 and 397,506,043,850.40

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Solution

The fourth proportional to 686,518,278,180.70, 947,333,645,823.80 and 397,506,043,850.40 is: 548,522,685,740.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,518,278,180.70 : 947,333,645,823.80 = 397,506,043,850.40 : x
  2. Step 2: Convert to fraction form
    686,518,278,180.70/947,333,645,823.80 = 397,506,043,850.40/x
  3. Step 3: Cross multiply
    686,518,278,180.70x = 947,333,645,823.80 × 397,506,043,850.40
  4. Step 4: Simplify right side
    686,518,278,180.70x = 376,570,849,757,794,802,860,032
  5. Step 5: Solve for x
    x = 376,570,849,757,794,802,860,032/686,518,278,180.70
  6. Step 6: Final answer
    x = 548,522,685,740.75

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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.