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Finding the Fourth Proportional to 880,720.40, 1,321,123.80 and 460,816.40

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Solution

The fourth proportional to 880,720.40, 1,321,123.80 and 460,816.40 is: 691,247.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,720.40 : 1,321,123.80 = 460,816.40 : x
  2. Step 2: Convert to fraction form
    880,720.40/1,321,123.80 = 460,816.40/x
  3. Step 3: Cross multiply
    880,720.40x = 1,321,123.80 × 460,816.40
  4. Step 4: Simplify right side
    880,720.40x = 608,795,513,470.32
  5. Step 5: Solve for x
    x = 608,795,513,470.32/880,720.40
  6. Step 6: Final answer
    x = 691,247.20

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1.5x scale

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.