Home / 689,559,312.30-1,034,338,968.45-431,066,409.90

Finding the Fourth Proportional to 689,559,312.30, 1,034,338,968.45 and 431,066,409.90

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Solution

The fourth proportional to 689,559,312.30, 1,034,338,968.45 and 431,066,409.90 is: 646,599,614.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,559,312.30 : 1,034,338,968.45 = 431,066,409.90 : x
  2. Step 2: Convert to fraction form
    689,559,312.30/1,034,338,968.45 = 431,066,409.90/x
  3. Step 3: Cross multiply
    689,559,312.30x = 1,034,338,968.45 × 431,066,409.90
  4. Step 4: Simplify right side
    689,559,312.30x = 445,868,785,749,410,880
  5. Step 5: Solve for x
    x = 445,868,785,749,410,880/689,559,312.30
  6. Step 6: Final answer
    x = 646,599,614.85

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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.