Home / 657,818.15-907,795.79-385,890.67

Finding the Fourth Proportional to 657,818.15, 907,795.79 and 385,890.67

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Solution

The fourth proportional to 657,818.15, 907,795.79 and 385,890.67 is: 532,533.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,818.15 : 907,795.79 = 385,890.67 : x
  2. Step 2: Convert to fraction form
    657,818.15/907,795.79 = 385,890.67/x
  3. Step 3: Cross multiply
    657,818.15x = 907,795.79 × 385,890.67
  4. Step 4: Simplify right side
    657,818.15x = 350,309,926,278.66
  5. Step 5: Solve for x
    x = 350,309,926,278.66/657,818.15
  6. Step 6: Final answer
    x = 532,533.09

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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.