Home / 717,815.03-990,628.86-395,525.03

Finding the Fourth Proportional to 717,815.03, 990,628.86 and 395,525.03

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Solution

The fourth proportional to 717,815.03, 990,628.86 and 395,525.03 is: 545,848.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,815.03 : 990,628.86 = 395,525.03 : x
  2. Step 2: Convert to fraction form
    717,815.03/990,628.86 = 395,525.03/x
  3. Step 3: Cross multiply
    717,815.03x = 990,628.86 × 395,525.03
  4. Step 4: Simplify right side
    717,815.03x = 391,818,507,592.74
  5. Step 5: Solve for x
    x = 391,818,507,592.74/717,815.03
  6. Step 6: Final answer
    x = 545,848.85

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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.