Home / 1,105,320.40-1,658,855.40-431,724.40

Finding the Fourth Proportional to 1,105,320.40, 1,658,855.40 and 431,724.40

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Solution

The fourth proportional to 1,105,320.40, 1,658,855.40 and 431,724.40 is: 647,928.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,320.40 : 1,658,855.40 = 431,724.40 : x
  2. Step 2: Convert to fraction form
    1,105,320.40/1,658,855.40 = 431,724.40/x
  3. Step 3: Cross multiply
    1,105,320.40x = 1,658,855.40 × 431,724.40
  4. Step 4: Simplify right side
    1,105,320.40x = 716,168,352,251.76
  5. Step 5: Solve for x
    x = 716,168,352,251.76/1,105,320.40
  6. Step 6: Final answer
    x = 647,928.29

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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.