Home / 1,007,769.20-1,390,721.40-555,060.20

Finding the Fourth Proportional to 1,007,769.20, 1,390,721.40 and 555,060.20

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Solution

The fourth proportional to 1,007,769.20, 1,390,721.40 and 555,060.20 is: 765,983.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,769.20 : 1,390,721.40 = 555,060.20 : x
  2. Step 2: Convert to fraction form
    1,007,769.20/1,390,721.40 = 555,060.20/x
  3. Step 3: Cross multiply
    1,007,769.20x = 1,390,721.40 × 555,060.20
  4. Step 4: Simplify right side
    1,007,769.20x = 771,934,091,474.67
  5. Step 5: Solve for x
    x = 771,934,091,474.67/1,007,769.20
  6. Step 6: Final answer
    x = 765,983.02

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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.