Home / 688,332.78-949,903.74-382,405.50

Finding the Fourth Proportional to 688,332.78, 949,903.74 and 382,405.50

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Solution

The fourth proportional to 688,332.78, 949,903.74 and 382,405.50 is: 527,722.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,332.78 : 949,903.74 = 382,405.50 : x
  2. Step 2: Convert to fraction form
    688,332.78/949,903.74 = 382,405.50/x
  3. Step 3: Cross multiply
    688,332.78x = 949,903.74 × 382,405.50
  4. Step 4: Simplify right side
    688,332.78x = 363,248,414,646.57
  5. Step 5: Solve for x
    x = 363,248,414,646.57/688,332.78
  6. Step 6: Final answer
    x = 527,722.09

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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.