Home / 1,007,775.20-1,390,729.68-555,066.20

Finding the Fourth Proportional to 1,007,775.20, 1,390,729.68 and 555,066.20

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Solution

The fourth proportional to 1,007,775.20, 1,390,729.68 and 555,066.20 is: 765,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,775.20 : 1,390,729.68 = 555,066.20 : x
  2. Step 2: Convert to fraction form
    1,007,775.20/1,390,729.68 = 555,066.20/x
  3. Step 3: Cross multiply
    1,007,775.20x = 1,390,729.68 × 555,066.20
  4. Step 4: Simplify right side
    1,007,775.20x = 771,947,038,704.82
  5. Step 5: Solve for x
    x = 771,947,038,704.82/1,007,775.20
  6. Step 6: Final answer
    x = 765,991.30

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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.