Home / 814,409.86-1,123,938.74-470,260.30

Finding the Fourth Proportional to 814,409.86, 1,123,938.74 and 470,260.30

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Solution

The fourth proportional to 814,409.86, 1,123,938.74 and 470,260.30 is: 648,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,409.86 : 1,123,938.74 = 470,260.30 : x
  2. Step 2: Convert to fraction form
    814,409.86/1,123,938.74 = 470,260.30/x
  3. Step 3: Cross multiply
    814,409.86x = 1,123,938.74 × 470,260.30
  4. Step 4: Simplify right side
    814,409.86x = 528,543,767,419.83
  5. Step 5: Solve for x
    x = 528,543,767,419.83/814,409.86
  6. Step 6: Final answer
    x = 648,989.89

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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.