Home / 909,343.78-1,255,000.98-546,949.78

Finding the Fourth Proportional to 909,343.78, 1,255,000.98 and 546,949.78

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Solution

The fourth proportional to 909,343.78, 1,255,000.98 and 546,949.78 is: 754,854.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,343.78 : 1,255,000.98 = 546,949.78 : x
  2. Step 2: Convert to fraction form
    909,343.78/1,255,000.98 = 546,949.78/x
  3. Step 3: Cross multiply
    909,343.78x = 1,255,000.98 × 546,949.78
  4. Step 4: Simplify right side
    909,343.78x = 686,422,509,910.78
  5. Step 5: Solve for x
    x = 686,422,509,910.78/909,343.78
  6. Step 6: Final answer
    x = 754,854.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.