Home / 938,419.10-1,406,382.96-489,019.30

Finding the Fourth Proportional to 938,419.10, 1,406,382.96 and 489,019.30

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Solution

The fourth proportional to 938,419.10, 1,406,382.96 and 489,019.30 is: 732,879.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,419.10 : 1,406,382.96 = 489,019.30 : x
  2. Step 2: Convert to fraction form
    938,419.10/1,406,382.96 = 489,019.30/x
  3. Step 3: Cross multiply
    938,419.10x = 1,406,382.96 × 489,019.30
  4. Step 4: Simplify right side
    938,419.10x = 687,748,410,631.13
  5. Step 5: Solve for x
    x = 687,748,410,631.13/938,419.10
  6. Step 6: Final answer
    x = 732,879.81

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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.