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Finding the Fourth Proportional to 647,112.70, 893,018.49 and 375,341.50

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Solution

The fourth proportional to 647,112.70, 893,018.49 and 375,341.50 is: 517,972.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,112.70 : 893,018.49 = 375,341.50 : x
  2. Step 2: Convert to fraction form
    647,112.70/893,018.49 = 375,341.50/x
  3. Step 3: Cross multiply
    647,112.70x = 893,018.49 × 375,341.50
  4. Step 4: Simplify right side
    647,112.70x = 335,186,899,564.34
  5. Step 5: Solve for x
    x = 335,186,899,564.34/647,112.70
  6. Step 6: Final answer
    x = 517,972.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.