Home / 708,610,446.80-977,910,730.44-395,372,037.20

Finding the Fourth Proportional to 708,610,446.80, 977,910,730.44 and 395,372,037.20

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Solution

The fourth proportional to 708,610,446.80, 977,910,730.44 and 395,372,037.20 is: 545,629,209.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,610,446.80 : 977,910,730.44 = 395,372,037.20 : x
  2. Step 2: Convert to fraction form
    708,610,446.80/977,910,730.44 = 395,372,037.20/x
  3. Step 3: Cross multiply
    708,610,446.80x = 977,910,730.44 × 395,372,037.20
  4. Step 4: Simplify right side
    708,610,446.80x = 386,638,557,693,802,880
  5. Step 5: Solve for x
    x = 386,638,557,693,802,880/708,610,446.80
  6. Step 6: Final answer
    x = 545,629,209.17

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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.