Home / 688,333.78-949,905.12-382,406.50

Finding the Fourth Proportional to 688,333.78, 949,905.12 and 382,406.50

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Solution

The fourth proportional to 688,333.78, 949,905.12 and 382,406.50 is: 527,723.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,333.78 : 949,905.12 = 382,406.50 : x
  2. Step 2: Convert to fraction form
    688,333.78/949,905.12 = 382,406.50/x
  3. Step 3: Cross multiply
    688,333.78x = 949,905.12 × 382,406.50
  4. Step 4: Simplify right side
    688,333.78x = 363,249,892,271.28
  5. Step 5: Solve for x
    x = 363,249,892,271.28/688,333.78
  6. Step 6: Final answer
    x = 527,723.47

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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.