Home / 726,282.40-1,088,041.20-430,448.80

Finding the Fourth Proportional to 726,282.40, 1,088,041.20 and 430,448.80

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Solution

The fourth proportional to 726,282.40, 1,088,041.20 and 430,448.80 is: 644,853.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,282.40 : 1,088,041.20 = 430,448.80 : x
  2. Step 2: Convert to fraction form
    726,282.40/1,088,041.20 = 430,448.80/x
  3. Step 3: Cross multiply
    726,282.40x = 1,088,041.20 × 430,448.80
  4. Step 4: Simplify right side
    726,282.40x = 468,346,028,890.56
  5. Step 5: Solve for x
    x = 468,346,028,890.56/726,282.40
  6. Step 6: Final answer
    x = 644,853.89

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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.