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Finding the Fourth Proportional to 520,366.55, 718,225.85 and 338,762.25

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Solution

The fourth proportional to 520,366.55, 718,225.85 and 338,762.25 is: 467,570.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,366.55 : 718,225.85 = 338,762.25 : x
  2. Step 2: Convert to fraction form
    520,366.55/718,225.85 = 338,762.25/x
  3. Step 3: Cross multiply
    520,366.55x = 718,225.85 × 338,762.25
  4. Step 4: Simplify right side
    520,366.55x = 243,307,805,801.07
  5. Step 5: Solve for x
    x = 243,307,805,801.07/520,366.55
  6. Step 6: Final answer
    x = 467,570.04

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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.