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Finding the Fourth Proportional to 519,424.79, 780,319.39 and 375,773.63

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Solution

The fourth proportional to 519,424.79, 780,319.39 and 375,773.63 is: 564,515.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,424.79 : 780,319.39 = 375,773.63 : x
  2. Step 2: Convert to fraction form
    519,424.79/780,319.39 = 375,773.63/x
  3. Step 3: Cross multiply
    519,424.79x = 780,319.39 × 375,773.63
  4. Step 4: Simplify right side
    519,424.79x = 293,223,444,898.66
  5. Step 5: Solve for x
    x = 293,223,444,898.66/519,424.79
  6. Step 6: Final answer
    x = 564,515.69

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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.