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Finding the Fourth Proportional to 688,970.49, 950,810.93 and 383,078.28

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Solution

The fourth proportional to 688,970.49, 950,810.93 and 383,078.28 is: 528,665.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,970.49 : 950,810.93 = 383,078.28 : x
  2. Step 2: Convert to fraction form
    688,970.49/950,810.93 = 383,078.28/x
  3. Step 3: Cross multiply
    688,970.49x = 950,810.93 × 383,078.28
  4. Step 4: Simplify right side
    688,970.49x = 364,235,013,754.21
  5. Step 5: Solve for x
    x = 364,235,013,754.21/688,970.49
  6. Step 6: Final answer
    x = 528,665.62

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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.