Home / 830,880.90-1,146,609.81-491,341.86

Finding the Fourth Proportional to 830,880.90, 1,146,609.81 and 491,341.86

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Solution

The fourth proportional to 830,880.90, 1,146,609.81 and 491,341.86 is: 678,048.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,880.90 : 1,146,609.81 = 491,341.86 : x
  2. Step 2: Convert to fraction form
    830,880.90/1,146,609.81 = 491,341.86/x
  3. Step 3: Cross multiply
    830,880.90x = 1,146,609.81 × 491,341.86
  4. Step 4: Simplify right side
    830,880.90x = 563,377,396,739.65
  5. Step 5: Solve for x
    x = 563,377,396,739.65/830,880.90
  6. Step 6: Final answer
    x = 678,048.32

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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.