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Finding the Fourth Proportional to 453,777.70, 680,666.55 and 391,569.70

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Solution

The fourth proportional to 453,777.70, 680,666.55 and 391,569.70 is: 587,354.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,777.70 : 680,666.55 = 391,569.70 : x
  2. Step 2: Convert to fraction form
    453,777.70/680,666.55 = 391,569.70/x
  3. Step 3: Cross multiply
    453,777.70x = 680,666.55 × 391,569.70
  4. Step 4: Simplify right side
    453,777.70x = 266,528,396,783.54
  5. Step 5: Solve for x
    x = 266,528,396,783.54/453,777.70
  6. Step 6: Final answer
    x = 587,354.55

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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.