Home / 579,569.40-869,742.90-342,660.60

Finding the Fourth Proportional to 579,569.40, 869,742.90 and 342,660.60

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Solution

The fourth proportional to 579,569.40, 869,742.90 and 342,660.60 is: 514,220.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,569.40 : 869,742.90 = 342,660.60 : x
  2. Step 2: Convert to fraction form
    579,569.40/869,742.90 = 342,660.60/x
  3. Step 3: Cross multiply
    579,569.40x = 869,742.90 × 342,660.60
  4. Step 4: Simplify right side
    579,569.40x = 298,026,623,959.74
  5. Step 5: Solve for x
    x = 298,026,623,959.74/579,569.40
  6. Step 6: Final answer
    x = 514,220.77

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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.