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Finding the Fourth Proportional to 670,330, 924,959.20 and 394,523.92

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Solution

The fourth proportional to 670,330, 924,959.20 and 394,523.92 is: 544,386.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,330 : 924,959.20 = 394,523.92 : x
  2. Step 2: Convert to fraction form
    670,330/924,959.20 = 394,523.92/x
  3. Step 3: Cross multiply
    670,330x = 924,959.20 × 394,523.92
  4. Step 4: Simplify right side
    670,330x = 364,918,529,424.06
  5. Step 5: Solve for x
    x = 364,918,529,424.06/670,330
  6. Step 6: Final answer
    x = 544,386.39

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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.