Home / 670,780,329.40-1,005,572,130.90-261,741,345.40

Finding the Fourth Proportional to 670,780,329.40, 1,005,572,130.90 and 261,741,345.40

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Solution

The fourth proportional to 670,780,329.40, 1,005,572,130.90 and 261,741,345.40 is: 392,378,534.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,780,329.40 : 1,005,572,130.90 = 261,741,345.40 : x
  2. Step 2: Convert to fraction form
    670,780,329.40/1,005,572,130.90 = 261,741,345.40/x
  3. Step 3: Cross multiply
    670,780,329.40x = 1,005,572,130.90 × 261,741,345.40
  4. Step 4: Simplify right side
    670,780,329.40x = 263,199,802,438,510,912
  5. Step 5: Solve for x
    x = 263,199,802,438,510,912/670,780,329.40
  6. Step 6: Final answer
    x = 392,378,534.23

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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.