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Finding the Fourth Proportional to 478,812.52, 660,638.82 and 304,319.08

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Solution

The fourth proportional to 478,812.52, 660,638.82 and 304,319.08 is: 419,882.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,812.52 : 660,638.82 = 304,319.08 : x
  2. Step 2: Convert to fraction form
    478,812.52/660,638.82 = 304,319.08/x
  3. Step 3: Cross multiply
    478,812.52x = 660,638.82 × 304,319.08
  4. Step 4: Simplify right side
    478,812.52x = 201,044,997,914.69
  5. Step 5: Solve for x
    x = 201,044,997,914.69/478,812.52
  6. Step 6: Final answer
    x = 419,882.50

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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.