Home / 909,061.41-1,254,481.65-501,153.78

Finding the Fourth Proportional to 909,061.41, 1,254,481.65 and 501,153.78

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Solution

The fourth proportional to 909,061.41, 1,254,481.65 and 501,153.78 is: 691,579.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,061.41 : 1,254,481.65 = 501,153.78 : x
  2. Step 2: Convert to fraction form
    909,061.41/1,254,481.65 = 501,153.78/x
  3. Step 3: Cross multiply
    909,061.41x = 1,254,481.65 × 501,153.78
  4. Step 4: Simplify right side
    909,061.41x = 628,688,226,951.94
  5. Step 5: Solve for x
    x = 628,688,226,951.94/909,061.41
  6. Step 6: Final answer
    x = 691,579.49

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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.