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Finding the Fourth Proportional to 554,029.38, 830,748.69 and 287,521.56

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Solution

The fourth proportional to 554,029.38, 830,748.69 and 287,521.56 is: 431,129.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,029.38 : 830,748.69 = 287,521.56 : x
  2. Step 2: Convert to fraction form
    554,029.38/830,748.69 = 287,521.56/x
  3. Step 3: Cross multiply
    554,029.38x = 830,748.69 × 287,521.56
  4. Step 4: Simplify right side
    554,029.38x = 238,858,159,316.76
  5. Step 5: Solve for x
    x = 238,858,159,316.76/554,029.38
  6. Step 6: Final answer
    x = 431,129.05

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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.