Home / 28,621,961,857.84-42,952,553,951.64-9,989,457,710.44

Finding the Fourth Proportional to 28,621,961,857.84, 42,952,553,951.64 and 9,989,457,710.44

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Solution

The fourth proportional to 28,621,961,857.84, 42,952,553,951.64 and 9,989,457,710.44 is: 14,991,031,131.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621,961,857.84 : 42,952,553,951.64 = 9,989,457,710.44 : x
  2. Step 2: Convert to fraction form
    28,621,961,857.84/42,952,553,951.64 = 9,989,457,710.44/x
  3. Step 3: Cross multiply
    28,621,961,857.84x = 42,952,553,951.64 × 9,989,457,710.44
  4. Step 4: Simplify right side
    28,621,961,857.84x = 429,072,721,255,300,333,568
  5. Step 5: Solve for x
    x = 429,072,721,255,300,333,568/28,621,961,857.84
  6. Step 6: Final answer
    x = 14,991,031,131.49

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Double scale
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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.