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Finding the Fourth Proportional to 565,503.72, 780,134.99 and 501,038.65

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Solution

The fourth proportional to 565,503.72, 780,134.99 and 501,038.65 is: 691,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,503.72 : 780,134.99 = 501,038.65 : x
  2. Step 2: Convert to fraction form
    565,503.72/780,134.99 = 501,038.65/x
  3. Step 3: Cross multiply
    565,503.72x = 780,134.99 × 501,038.65
  4. Step 4: Simplify right side
    565,503.72x = 390,877,782,207.36
  5. Step 5: Solve for x
    x = 390,877,782,207.36/565,503.72
  6. Step 6: Final answer
    x = 691,202.85

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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.