Home / 551,220.12-760,727.70-309,518.82

Finding the Fourth Proportional to 551,220.12, 760,727.70 and 309,518.82

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Solution

The fourth proportional to 551,220.12, 760,727.70 and 309,518.82 is: 427,160.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,220.12 : 760,727.70 = 309,518.82 : x
  2. Step 2: Convert to fraction form
    551,220.12/760,727.70 = 309,518.82/x
  3. Step 3: Cross multiply
    551,220.12x = 760,727.70 × 309,518.82
  4. Step 4: Simplify right side
    551,220.12x = 235,459,540,045.31
  5. Step 5: Solve for x
    x = 235,459,540,045.31/551,220.12
  6. Step 6: Final answer
    x = 427,160.64

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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.