Home / 470,943.40-705,378.30-418,412.20

Finding the Fourth Proportional to 470,943.40, 705,378.30 and 418,412.20

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Solution

The fourth proportional to 470,943.40, 705,378.30 and 418,412.20 is: 626,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,943.40 : 705,378.30 = 418,412.20 : x
  2. Step 2: Convert to fraction form
    470,943.40/705,378.30 = 418,412.20/x
  3. Step 3: Cross multiply
    470,943.40x = 705,378.30 × 418,412.20
  4. Step 4: Simplify right side
    470,943.40x = 295,138,886,335.26
  5. Step 5: Solve for x
    x = 295,138,886,335.26/470,943.40
  6. Step 6: Final answer
    x = 626,697.15

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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.