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Finding the Fourth Proportional to 553,283.20, 829,924.80 and 520,040.80

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Solution

The fourth proportional to 553,283.20, 829,924.80 and 520,040.80 is: 780,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,283.20 : 829,924.80 = 520,040.80 : x
  2. Step 2: Convert to fraction form
    553,283.20/829,924.80 = 520,040.80/x
  3. Step 3: Cross multiply
    553,283.20x = 829,924.80 × 520,040.80
  4. Step 4: Simplify right side
    553,283.20x = 431,594,756,931.84
  5. Step 5: Solve for x
    x = 431,594,756,931.84/553,283.20
  6. Step 6: Final answer
    x = 780,061.20

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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.