Home / 1,421,063.20-2,129,780.40-578,663.20

Finding the Fourth Proportional to 1,421,063.20, 2,129,780.40 and 578,663.20

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Solution

The fourth proportional to 1,421,063.20, 2,129,780.40 and 578,663.20 is: 867,255.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,063.20 : 2,129,780.40 = 578,663.20 : x
  2. Step 2: Convert to fraction form
    1,421,063.20/2,129,780.40 = 578,663.20/x
  3. Step 3: Cross multiply
    1,421,063.20x = 2,129,780.40 × 578,663.20
  4. Step 4: Simplify right side
    1,421,063.20x = 1,232,425,541,561.28
  5. Step 5: Solve for x
    x = 1,232,425,541,561.28/1,421,063.20
  6. Step 6: Final answer
    x = 867,255.97

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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.