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Finding the Fourth Proportional to 565,510.02, 780,404.67 and 310,862.76

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Solution

The fourth proportional to 565,510.02, 780,404.67 and 310,862.76 is: 428,991.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,510.02 : 780,404.67 = 310,862.76 : x
  2. Step 2: Convert to fraction form
    565,510.02/780,404.67 = 310,862.76/x
  3. Step 3: Cross multiply
    565,510.02x = 780,404.67 × 310,862.76
  4. Step 4: Simplify right side
    565,510.02x = 242,598,749,633.09
  5. Step 5: Solve for x
    x = 242,598,749,633.09/565,510.02
  6. Step 6: Final answer
    x = 428,991.07

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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.