Home / 687,395.34-1,030,759.65-403,178.70

Finding the Fourth Proportional to 687,395.34, 1,030,759.65 and 403,178.70

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Solution

The fourth proportional to 687,395.34, 1,030,759.65 and 403,178.70 is: 604,572.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,395.34 : 1,030,759.65 = 403,178.70 : x
  2. Step 2: Convert to fraction form
    687,395.34/1,030,759.65 = 403,178.70/x
  3. Step 3: Cross multiply
    687,395.34x = 1,030,759.65 × 403,178.70
  4. Step 4: Simplify right side
    687,395.34x = 415,580,335,699.46
  5. Step 5: Solve for x
    x = 415,580,335,699.46/687,395.34
  6. Step 6: Final answer
    x = 604,572.52

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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.