Home / 717,994.24-990,828.80-395,703.64

Finding the Fourth Proportional to 717,994.24, 990,828.80 and 395,703.64

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Solution

The fourth proportional to 717,994.24, 990,828.80 and 395,703.64 is: 546,069.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,994.24 : 990,828.80 = 395,703.64 : x
  2. Step 2: Convert to fraction form
    717,994.24/990,828.80 = 395,703.64/x
  3. Step 3: Cross multiply
    717,994.24x = 990,828.80 × 395,703.64
  4. Step 4: Simplify right side
    717,994.24x = 392,074,555,844.17
  5. Step 5: Solve for x
    x = 392,074,555,844.17/717,994.24
  6. Step 6: Final answer
    x = 546,069.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.