Home / 712,822.40-1,069,521.60-313,539.20

Finding the Fourth Proportional to 712,822.40, 1,069,521.60 and 313,539.20

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Solution

The fourth proportional to 712,822.40, 1,069,521.60 and 313,539.20 is: 470,435.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,822.40 : 1,069,521.60 = 313,539.20 : x
  2. Step 2: Convert to fraction form
    712,822.40/1,069,521.60 = 313,539.20/x
  3. Step 3: Cross multiply
    712,822.40x = 1,069,521.60 × 313,539.20
  4. Step 4: Simplify right side
    712,822.40x = 335,336,946,846.72
  5. Step 5: Solve for x
    x = 335,336,946,846.72/712,822.40
  6. Step 6: Final answer
    x = 470,435.48

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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.