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Finding the Fourth Proportional to 565,836.98, 780,860.57 and 307,719.45

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Solution

The fourth proportional to 565,836.98, 780,860.57 and 307,719.45 is: 424,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,836.98 : 780,860.57 = 307,719.45 : x
  2. Step 2: Convert to fraction form
    565,836.98/780,860.57 = 307,719.45/x
  3. Step 3: Cross multiply
    565,836.98x = 780,860.57 × 307,719.45
  4. Step 4: Simplify right side
    565,836.98x = 240,285,983,588.49
  5. Step 5: Solve for x
    x = 240,285,983,588.49/565,836.98
  6. Step 6: Final answer
    x = 424,655.85

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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.