Home / 513,318.60-771,290.10-455,581.80

Finding the Fourth Proportional to 513,318.60, 771,290.10 and 455,581.80

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Solution

The fourth proportional to 513,318.60, 771,290.10 and 455,581.80 is: 684,537.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,318.60 : 771,290.10 = 455,581.80 : x
  2. Step 2: Convert to fraction form
    513,318.60/771,290.10 = 455,581.80/x
  3. Step 3: Cross multiply
    513,318.60x = 771,290.10 × 455,581.80
  4. Step 4: Simplify right side
    513,318.60x = 351,385,732,080.18
  5. Step 5: Solve for x
    x = 351,385,732,080.18/513,318.60
  6. Step 6: Final answer
    x = 684,537.31

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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.