Home / 917,918.40-1,377,007.20-286,766.40

Finding the Fourth Proportional to 917,918.40, 1,377,007.20 and 286,766.40

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Solution

The fourth proportional to 917,918.40, 1,377,007.20 and 286,766.40 is: 430,190.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,918.40 : 1,377,007.20 = 286,766.40 : x
  2. Step 2: Convert to fraction form
    917,918.40/1,377,007.20 = 286,766.40/x
  3. Step 3: Cross multiply
    917,918.40x = 1,377,007.20 × 286,766.40
  4. Step 4: Simplify right side
    917,918.40x = 394,879,397,518.08
  5. Step 5: Solve for x
    x = 394,879,397,518.08/917,918.40
  6. Step 6: Final answer
    x = 430,190.09

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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.