Home / 656,128.42-983,842.71-339,800.74

Finding the Fourth Proportional to 656,128.42, 983,842.71 and 339,800.74

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Solution

The fourth proportional to 656,128.42, 983,842.71 and 339,800.74 is: 509,519.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,128.42 : 983,842.71 = 339,800.74 : x
  2. Step 2: Convert to fraction form
    656,128.42/983,842.71 = 339,800.74/x
  3. Step 3: Cross multiply
    656,128.42x = 983,842.71 × 339,800.74
  4. Step 4: Simplify right side
    656,128.42x = 334,310,480,901.61
  5. Step 5: Solve for x
    x = 334,310,480,901.61/656,128.42
  6. Step 6: Final answer
    x = 509,519.89

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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.