Home / 690,000.28-1,034,650.36-315,702.52

Finding the Fourth Proportional to 690,000.28, 1,034,650.36 and 315,702.52

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Solution

The fourth proportional to 690,000.28, 1,034,650.36 and 315,702.52 is: 473,393.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,000.28 : 1,034,650.36 = 315,702.52 : x
  2. Step 2: Convert to fraction form
    690,000.28/1,034,650.36 = 315,702.52/x
  3. Step 3: Cross multiply
    690,000.28x = 1,034,650.36 × 315,702.52
  4. Step 4: Simplify right side
    690,000.28x = 326,641,725,970.91
  5. Step 5: Solve for x
    x = 326,641,725,970.91/690,000.28
  6. Step 6: Final answer
    x = 473,393.61

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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.