Home / 1,220,472.78-1,830,709.26-472,518.78

Finding the Fourth Proportional to 1,220,472.78, 1,830,709.26 and 472,518.78

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Solution

The fourth proportional to 1,220,472.78, 1,830,709.26 and 472,518.78 is: 708,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,472.78 : 1,830,709.26 = 472,518.78 : x
  2. Step 2: Convert to fraction form
    1,220,472.78/1,830,709.26 = 472,518.78/x
  3. Step 3: Cross multiply
    1,220,472.78x = 1,830,709.26 × 472,518.78
  4. Step 4: Simplify right side
    1,220,472.78x = 865,044,506,069.90
  5. Step 5: Solve for x
    x = 865,044,506,069.90/1,220,472.78
  6. Step 6: Final answer
    x = 708,778.20

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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.