Home / 1,128,479.72-1,693,011.18-418,710.20

Finding the Fourth Proportional to 1,128,479.72, 1,693,011.18 and 418,710.20

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Solution

The fourth proportional to 1,128,479.72, 1,693,011.18 and 418,710.20 is: 628,173.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,479.72 : 1,693,011.18 = 418,710.20 : x
  2. Step 2: Convert to fraction form
    1,128,479.72/1,693,011.18 = 418,710.20/x
  3. Step 3: Cross multiply
    1,128,479.72x = 1,693,011.18 × 418,710.20
  4. Step 4: Simplify right side
    1,128,479.72x = 708,881,049,780.04
  5. Step 5: Solve for x
    x = 708,881,049,780.04/1,128,479.72
  6. Step 6: Final answer
    x = 628,173.50

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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.