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Finding the Fourth Proportional to 520,950.80, 780,259.80 and 402,237.20

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Solution

The fourth proportional to 520,950.80, 780,259.80 and 402,237.20 is: 602,455.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,950.80 : 780,259.80 = 402,237.20 : x
  2. Step 2: Convert to fraction form
    520,950.80/780,259.80 = 402,237.20/x
  3. Step 3: Cross multiply
    520,950.80x = 780,259.80 × 402,237.20
  4. Step 4: Simplify right side
    520,950.80x = 313,849,517,224.56
  5. Step 5: Solve for x
    x = 313,849,517,224.56/520,950.80
  6. Step 6: Final answer
    x = 602,455.20

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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.