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Finding the Fourth Proportional to 557,998.76, 770,005.59 and 303,347.72

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Solution

The fourth proportional to 557,998.76, 770,005.59 and 303,347.72 is: 418,602.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,998.76 : 770,005.59 = 303,347.72 : x
  2. Step 2: Convert to fraction form
    557,998.76/770,005.59 = 303,347.72/x
  3. Step 3: Cross multiply
    557,998.76x = 770,005.59 × 303,347.72
  4. Step 4: Simplify right side
    557,998.76x = 233,579,440,113.76
  5. Step 5: Solve for x
    x = 233,579,440,113.76/557,998.76
  6. Step 6: Final answer
    x = 418,602.08

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Half scale
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Double scale
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Similar ratio
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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.