Home / 687,938.58-1,031,436.81-350,325.72

Finding the Fourth Proportional to 687,938.58, 1,031,436.81 and 350,325.72

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Solution

The fourth proportional to 687,938.58, 1,031,436.81 and 350,325.72 is: 525,248.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,938.58 : 1,031,436.81 = 350,325.72 : x
  2. Step 2: Convert to fraction form
    687,938.58/1,031,436.81 = 350,325.72/x
  3. Step 3: Cross multiply
    687,938.58x = 1,031,436.81 × 350,325.72
  4. Step 4: Simplify right side
    687,938.58x = 361,338,843,097.75
  5. Step 5: Solve for x
    x = 361,338,843,097.75/687,938.58
  6. Step 6: Final answer
    x = 525,248.70

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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.