Home / 687,921.60-1,029,808.80-604,977.60

Finding the Fourth Proportional to 687,921.60, 1,029,808.80 and 604,977.60

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Solution

The fourth proportional to 687,921.60, 1,029,808.80 and 604,977.60 is: 905,642.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,921.60 : 1,029,808.80 = 604,977.60 : x
  2. Step 2: Convert to fraction form
    687,921.60/1,029,808.80 = 604,977.60/x
  3. Step 3: Cross multiply
    687,921.60x = 1,029,808.80 × 604,977.60
  4. Step 4: Simplify right side
    687,921.60x = 623,011,256,282.88
  5. Step 5: Solve for x
    x = 623,011,256,282.88/687,921.60
  6. Step 6: Final answer
    x = 905,642.82

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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.