Home / 712,802.40-1,069,491.60-313,519.20

Finding the Fourth Proportional to 712,802.40, 1,069,491.60 and 313,519.20

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Solution

The fourth proportional to 712,802.40, 1,069,491.60 and 313,519.20 is: 470,405.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,802.40 : 1,069,491.60 = 313,519.20 : x
  2. Step 2: Convert to fraction form
    712,802.40/1,069,491.60 = 313,519.20/x
  3. Step 3: Cross multiply
    712,802.40x = 1,069,491.60 × 313,519.20
  4. Step 4: Simplify right side
    712,802.40x = 335,306,150,838.72
  5. Step 5: Solve for x
    x = 335,306,150,838.72/712,802.40
  6. Step 6: Final answer
    x = 470,405.47

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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.