Home / 712,870.40-1,069,593.60-313,587.20

Finding the Fourth Proportional to 712,870.40, 1,069,593.60 and 313,587.20

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Solution

The fourth proportional to 712,870.40, 1,069,593.60 and 313,587.20 is: 470,507.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,870.40 : 1,069,593.60 = 313,587.20 : x
  2. Step 2: Convert to fraction form
    712,870.40/1,069,593.60 = 313,587.20/x
  3. Step 3: Cross multiply
    712,870.40x = 1,069,593.60 × 313,587.20
  4. Step 4: Simplify right side
    712,870.40x = 335,410,862,161.92
  5. Step 5: Solve for x
    x = 335,410,862,161.92/712,870.40
  6. Step 6: Final answer
    x = 470,507.49

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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.