Home / 712,782.40-1,069,461.60-313,499.20

Finding the Fourth Proportional to 712,782.40, 1,069,461.60 and 313,499.20

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Solution

The fourth proportional to 712,782.40, 1,069,461.60 and 313,499.20 is: 470,375.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,782.40 : 1,069,461.60 = 313,499.20 : x
  2. Step 2: Convert to fraction form
    712,782.40/1,069,461.60 = 313,499.20/x
  3. Step 3: Cross multiply
    712,782.40x = 1,069,461.60 × 313,499.20
  4. Step 4: Simplify right side
    712,782.40x = 335,275,356,030.72
  5. Step 5: Solve for x
    x = 335,275,356,030.72/712,782.40
  6. Step 6: Final answer
    x = 470,375.47

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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.