Home / 688,037.49-949,631.45-397,661.40

Finding the Fourth Proportional to 688,037.49, 949,631.45 and 397,661.40

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Solution

The fourth proportional to 688,037.49, 949,631.45 and 397,661.40 is: 548,853.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,037.49 : 949,631.45 = 397,661.40 : x
  2. Step 2: Convert to fraction form
    688,037.49/949,631.45 = 397,661.40/x
  3. Step 3: Cross multiply
    688,037.49x = 949,631.45 × 397,661.40
  4. Step 4: Simplify right side
    688,037.49x = 377,631,769,902.72
  5. Step 5: Solve for x
    x = 377,631,769,902.72/688,037.49
  6. Step 6: Final answer
    x = 548,853.48

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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.