Home / 717,566.04-990,242.28-395,277.48

Finding the Fourth Proportional to 717,566.04, 990,242.28 and 395,277.48

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Solution

The fourth proportional to 717,566.04, 990,242.28 and 395,277.48 is: 545,483.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,566.04 : 990,242.28 = 395,277.48 : x
  2. Step 2: Convert to fraction form
    717,566.04/990,242.28 = 395,277.48/x
  3. Step 3: Cross multiply
    717,566.04x = 990,242.28 × 395,277.48
  4. Step 4: Simplify right side
    717,566.04x = 391,420,473,027.85
  5. Step 5: Solve for x
    x = 391,420,473,027.85/717,566.04
  6. Step 6: Final answer
    x = 545,483.55

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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.