Home / 872,829.40-1,308,984.90-340,043.80

Finding the Fourth Proportional to 872,829.40, 1,308,984.90 and 340,043.80

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Solution

The fourth proportional to 872,829.40, 1,308,984.90 and 340,043.80 is: 509,964.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,829.40 : 1,308,984.90 = 340,043.80 : x
  2. Step 2: Convert to fraction form
    872,829.40/1,308,984.90 = 340,043.80/x
  3. Step 3: Cross multiply
    872,829.40x = 1,308,984.90 × 340,043.80
  4. Step 4: Simplify right side
    872,829.40x = 445,112,199,538.62
  5. Step 5: Solve for x
    x = 445,112,199,538.62/872,829.40
  6. Step 6: Final answer
    x = 509,964.72

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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.