Home / 646,563,385.80-969,845,078.70-186,516,563.40

Finding the Fourth Proportional to 646,563,385.80, 969,845,078.70 and 186,516,563.40

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Solution

The fourth proportional to 646,563,385.80, 969,845,078.70 and 186,516,563.40 is: 279,774,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,563,385.80 : 969,845,078.70 = 186,516,563.40 : x
  2. Step 2: Convert to fraction form
    646,563,385.80/969,845,078.70 = 186,516,563.40/x
  3. Step 3: Cross multiply
    646,563,385.80x = 969,845,078.70 × 186,516,563.40
  4. Step 4: Simplify right side
    646,563,385.80x = 180,892,171,109,526,560
  5. Step 5: Solve for x
    x = 180,892,171,109,526,560/646,563,385.80
  6. Step 6: Final answer
    x = 279,774,845.10

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1.5x scale

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.