Home / 771,640.80-1,157,072.40-456,194.40

Finding the Fourth Proportional to 771,640.80, 1,157,072.40 and 456,194.40

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Solution

The fourth proportional to 771,640.80, 1,157,072.40 and 456,194.40 is: 684,061.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,640.80 : 1,157,072.40 = 456,194.40 : x
  2. Step 2: Convert to fraction form
    771,640.80/1,157,072.40 = 456,194.40/x
  3. Step 3: Cross multiply
    771,640.80x = 1,157,072.40 × 456,194.40
  4. Step 4: Simplify right side
    771,640.80x = 527,849,949,274.56
  5. Step 5: Solve for x
    x = 527,849,949,274.56/771,640.80
  6. Step 6: Final answer
    x = 684,061.74

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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.