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Finding the Fourth Proportional to 718,975,951.80, 1,078,463,927.70 and 412,865,935.80

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Solution

The fourth proportional to 718,975,951.80, 1,078,463,927.70 and 412,865,935.80 is: 619,298,903.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,975,951.80 : 1,078,463,927.70 = 412,865,935.80 : x
  2. Step 2: Convert to fraction form
    718,975,951.80/1,078,463,927.70 = 412,865,935.80/x
  3. Step 3: Cross multiply
    718,975,951.80x = 1,078,463,927.70 × 412,865,935.80
  4. Step 4: Simplify right side
    718,975,951.80x = 445,261,018,736,404,096
  5. Step 5: Solve for x
    x = 445,261,018,736,404,096/718,975,951.80
  6. Step 6: Final answer
    x = 619,298,903.70

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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.