Home / 570,903.09-787,839.57-309,253.47

Finding the Fourth Proportional to 570,903.09, 787,839.57 and 309,253.47

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Solution

The fourth proportional to 570,903.09, 787,839.57 and 309,253.47 is: 426,766.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,903.09 : 787,839.57 = 309,253.47 : x
  2. Step 2: Convert to fraction form
    570,903.09/787,839.57 = 309,253.47/x
  3. Step 3: Cross multiply
    570,903.09x = 787,839.57 × 309,253.47
  4. Step 4: Simplify right side
    570,903.09x = 243,642,120,825.81
  5. Step 5: Solve for x
    x = 243,642,120,825.81/570,903.09
  6. Step 6: Final answer
    x = 426,766.16

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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.