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Finding the Fourth Proportional to 689,354.70, 951,295.83 and 383,424.51

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Solution

The fourth proportional to 689,354.70, 951,295.83 and 383,424.51 is: 529,118.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,354.70 : 951,295.83 = 383,424.51 : x
  2. Step 2: Convert to fraction form
    689,354.70/951,295.83 = 383,424.51/x
  3. Step 3: Cross multiply
    689,354.70x = 951,295.83 × 383,424.51
  4. Step 4: Simplify right side
    689,354.70x = 364,750,137,482.79
  5. Step 5: Solve for x
    x = 364,750,137,482.79/689,354.70
  6. Step 6: Final answer
    x = 529,118.23

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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.