Home / 688,256.01-949,799.79-378,165.06

Finding the Fourth Proportional to 688,256.01, 949,799.79 and 378,165.06

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Solution

The fourth proportional to 688,256.01, 949,799.79 and 378,165.06 is: 521,871.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,256.01 : 949,799.79 = 378,165.06 : x
  2. Step 2: Convert to fraction form
    688,256.01/949,799.79 = 378,165.06/x
  3. Step 3: Cross multiply
    688,256.01x = 949,799.79 × 378,165.06
  4. Step 4: Simplify right side
    688,256.01x = 359,181,094,573.34
  5. Step 5: Solve for x
    x = 359,181,094,573.34/688,256.01
  6. Step 6: Final answer
    x = 521,871.35

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1.5x scale

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.