Home / 713,714.41-984,938.52-391,421.71

Finding the Fourth Proportional to 713,714.41, 984,938.52 and 391,421.71

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Solution

The fourth proportional to 713,714.41, 984,938.52 and 391,421.71 is: 540,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,714.41 : 984,938.52 = 391,421.71 : x
  2. Step 2: Convert to fraction form
    713,714.41/984,938.52 = 391,421.71/x
  3. Step 3: Cross multiply
    713,714.41x = 984,938.52 × 391,421.71
  4. Step 4: Simplify right side
    713,714.41x = 385,526,319,743.27
  5. Step 5: Solve for x
    x = 385,526,319,743.27/713,714.41
  6. Step 6: Final answer
    x = 540,168.89

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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.