Home / 679,013.07-1,022,581.78-618,479.64

Finding the Fourth Proportional to 679,013.07, 1,022,581.78 and 618,479.64

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Solution

The fourth proportional to 679,013.07, 1,022,581.78 and 618,479.64 is: 931,419.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,013.07 : 1,022,581.78 = 618,479.64 : x
  2. Step 2: Convert to fraction form
    679,013.07/1,022,581.78 = 618,479.64/x
  3. Step 3: Cross multiply
    679,013.07x = 1,022,581.78 × 618,479.64
  4. Step 4: Simplify right side
    679,013.07x = 632,446,011,164.96
  5. Step 5: Solve for x
    x = 632,446,011,164.96/679,013.07
  6. Step 6: Final answer
    x = 931,419.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.