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Finding the Fourth Proportional to 520,113.60, 779,632.80 and 282,955.20

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Solution

The fourth proportional to 520,113.60, 779,632.80 and 282,955.20 is: 424,140.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,113.60 : 779,632.80 = 282,955.20 : x
  2. Step 2: Convert to fraction form
    520,113.60/779,632.80 = 282,955.20/x
  3. Step 3: Cross multiply
    520,113.60x = 779,632.80 × 282,955.20
  4. Step 4: Simplify right side
    520,113.60x = 220,601,154,850.56
  5. Step 5: Solve for x
    x = 220,601,154,850.56/520,113.60
  6. Step 6: Final answer
    x = 424,140.33

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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.