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Finding the Fourth Proportional to 565,510.04, 780,384.06 and 310,859.40

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Solution

The fourth proportional to 565,510.04, 780,384.06 and 310,859.40 is: 428,975.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,510.04 : 780,384.06 = 310,859.40 : x
  2. Step 2: Convert to fraction form
    565,510.04/780,384.06 = 310,859.40/x
  3. Step 3: Cross multiply
    565,510.04x = 780,384.06 × 310,859.40
  4. Step 4: Simplify right side
    565,510.04x = 242,589,720,661.16
  5. Step 5: Solve for x
    x = 242,589,720,661.16/565,510.04
  6. Step 6: Final answer
    x = 428,975.09

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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.