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Finding the Fourth Proportional to 448,064.60, 672,096.90 and 380,413.40

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Solution

The fourth proportional to 448,064.60, 672,096.90 and 380,413.40 is: 570,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,064.60 : 672,096.90 = 380,413.40 : x
  2. Step 2: Convert to fraction form
    448,064.60/672,096.90 = 380,413.40/x
  3. Step 3: Cross multiply
    448,064.60x = 672,096.90 × 380,413.40
  4. Step 4: Simplify right side
    448,064.60x = 255,674,666,858.46
  5. Step 5: Solve for x
    x = 255,674,666,858.46/448,064.60
  6. Step 6: Final answer
    x = 570,620.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.