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Finding the Fourth Proportional to 578,649.84, 798,509.04 and 320,509.37

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Solution

The fourth proportional to 578,649.84, 798,509.04 and 320,509.37 is: 442,287.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,649.84 : 798,509.04 = 320,509.37 : x
  2. Step 2: Convert to fraction form
    578,649.84/798,509.04 = 320,509.37/x
  3. Step 3: Cross multiply
    578,649.84x = 798,509.04 × 320,509.37
  4. Step 4: Simplify right side
    578,649.84x = 255,929,630,144.07
  5. Step 5: Solve for x
    x = 255,929,630,144.07/578,649.84
  6. Step 6: Final answer
    x = 442,287.57

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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.