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Finding the Fourth Proportional to 688,073.72, 949,563.88 and 382,153.78

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Solution

The fourth proportional to 688,073.72, 949,563.88 and 382,153.78 is: 527,384.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,073.72 : 949,563.88 = 382,153.78 : x
  2. Step 2: Convert to fraction form
    688,073.72/949,563.88 = 382,153.78/x
  3. Step 3: Cross multiply
    688,073.72x = 949,563.88 × 382,153.78
  4. Step 4: Simplify right side
    688,073.72x = 362,879,426,093.47
  5. Step 5: Solve for x
    x = 362,879,426,093.47/688,073.72
  6. Step 6: Final answer
    x = 527,384.52

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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.