Home / 640,962,298.40-962,543,718.59-393,421,142.75

Finding the Fourth Proportional to 640,962,298.40, 962,543,718.59 and 393,421,142.75

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Solution

The fourth proportional to 640,962,298.40, 962,543,718.59 and 393,421,142.75 is: 590,807,057.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,962,298.40 : 962,543,718.59 = 393,421,142.75 : x
  2. Step 2: Convert to fraction form
    640,962,298.40/962,543,718.59 = 393,421,142.75/x
  3. Step 3: Cross multiply
    640,962,298.40x = 962,543,718.59 × 393,421,142.75
  4. Step 4: Simplify right side
    640,962,298.40x = 378,685,049,707,748,096
  5. Step 5: Solve for x
    x = 378,685,049,707,748,096/640,962,298.40
  6. Step 6: Final answer
    x = 590,807,057.85

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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.