Home / 768,550.20-1,152,867.35-319,316.49

Finding the Fourth Proportional to 768,550.20, 1,152,867.35 and 319,316.49

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Solution

The fourth proportional to 768,550.20, 1,152,867.35 and 319,316.49 is: 478,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,550.20 : 1,152,867.35 = 319,316.49 : x
  2. Step 2: Convert to fraction form
    768,550.20/1,152,867.35 = 319,316.49/x
  3. Step 3: Cross multiply
    768,550.20x = 1,152,867.35 × 319,316.49
  4. Step 4: Simplify right side
    768,550.20x = 368,129,554,041.02
  5. Step 5: Solve for x
    x = 368,129,554,041.02/768,550.20
  6. Step 6: Final answer
    x = 478,992.20

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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.