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Finding the Fourth Proportional to 478,892.07, 718,805.58 and 395,501.76

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Solution

The fourth proportional to 478,892.07, 718,805.58 and 395,501.76 is: 593,638.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,892.07 : 718,805.58 = 395,501.76 : x
  2. Step 2: Convert to fraction form
    478,892.07/718,805.58 = 395,501.76/x
  3. Step 3: Cross multiply
    478,892.07x = 718,805.58 × 395,501.76
  4. Step 4: Simplify right side
    478,892.07x = 284,288,871,987.82
  5. Step 5: Solve for x
    x = 284,288,871,987.82/478,892.07
  6. Step 6: Final answer
    x = 593,638.71

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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.