Home / 877,786.20-1,317,007.20-345,678.12

Finding the Fourth Proportional to 877,786.20, 1,317,007.20 and 345,678.12

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Solution

The fourth proportional to 877,786.20, 1,317,007.20 and 345,678.12 is: 518,646.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,786.20 : 1,317,007.20 = 345,678.12 : x
  2. Step 2: Convert to fraction form
    877,786.20/1,317,007.20 = 345,678.12/x
  3. Step 3: Cross multiply
    877,786.20x = 1,317,007.20 × 345,678.12
  4. Step 4: Simplify right side
    877,786.20x = 455,260,572,922.46
  5. Step 5: Solve for x
    x = 455,260,572,922.46/877,786.20
  6. Step 6: Final answer
    x = 518,646.31

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Double scale
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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.