Home / 1,007,689.68-1,390,674.64-554,980.56

Finding the Fourth Proportional to 1,007,689.68, 1,390,674.64 and 554,980.56

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Solution

The fourth proportional to 1,007,689.68, 1,390,674.64 and 554,980.56 is: 765,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,689.68 : 1,390,674.64 = 554,980.56 : x
  2. Step 2: Convert to fraction form
    1,007,689.68/1,390,674.64 = 554,980.56/x
  3. Step 3: Cross multiply
    1,007,689.68x = 1,390,674.64 × 554,980.56
  4. Step 4: Simplify right side
    1,007,689.68x = 771,797,390,485.00
  5. Step 5: Solve for x
    x = 771,797,390,485.00/1,007,689.68
  6. Step 6: Final answer
    x = 765,907.80

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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.