Home / 678,683.91-936,595.10-372,788.58

Finding the Fourth Proportional to 678,683.91, 936,595.10 and 372,788.58

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Solution

The fourth proportional to 678,683.91, 936,595.10 and 372,788.58 is: 514,454.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,683.91 : 936,595.10 = 372,788.58 : x
  2. Step 2: Convert to fraction form
    678,683.91/936,595.10 = 372,788.58/x
  3. Step 3: Cross multiply
    678,683.91x = 936,595.10 × 372,788.58
  4. Step 4: Simplify right side
    678,683.91x = 349,151,956,539.81
  5. Step 5: Solve for x
    x = 349,151,956,539.81/678,683.91
  6. Step 6: Final answer
    x = 514,454.45

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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.