Home / 900,316.89-1,242,299.27-518,269.83

Finding the Fourth Proportional to 900,316.89, 1,242,299.27 and 518,269.83

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Solution

The fourth proportional to 900,316.89, 1,242,299.27 and 518,269.83 is: 715,132.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,316.89 : 1,242,299.27 = 518,269.83 : x
  2. Step 2: Convert to fraction form
    900,316.89/1,242,299.27 = 518,269.83/x
  3. Step 3: Cross multiply
    900,316.89x = 1,242,299.27 × 518,269.83
  4. Step 4: Simplify right side
    900,316.89x = 643,846,228,880.68
  5. Step 5: Solve for x
    x = 643,846,228,880.68/900,316.89
  6. Step 6: Final answer
    x = 715,132.90

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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.