Home / 688,279.63-949,857.69-382,356.40

Finding the Fourth Proportional to 688,279.63, 949,857.69 and 382,356.40

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Solution

The fourth proportional to 688,279.63, 949,857.69 and 382,356.40 is: 527,669.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,279.63 : 949,857.69 = 382,356.40 : x
  2. Step 2: Convert to fraction form
    688,279.63/949,857.69 = 382,356.40/x
  3. Step 3: Cross multiply
    688,279.63x = 949,857.69 × 382,356.40
  4. Step 4: Simplify right side
    688,279.63x = 363,184,166,860.72
  5. Step 5: Solve for x
    x = 363,184,166,860.72/688,279.63
  6. Step 6: Final answer
    x = 527,669.50

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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.