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Finding the Fourth Proportional to 520,907.13, 780,827.87 and 352,445.24

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Solution

The fourth proportional to 520,907.13, 780,827.87 and 352,445.24 is: 528,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,907.13 : 780,827.87 = 352,445.24 : x
  2. Step 2: Convert to fraction form
    520,907.13/780,827.87 = 352,445.24/x
  3. Step 3: Cross multiply
    520,907.13x = 780,827.87 × 352,445.24
  4. Step 4: Simplify right side
    520,907.13x = 275,199,068,874.02
  5. Step 5: Solve for x
    x = 275,199,068,874.02/520,907.13
  6. Step 6: Final answer
    x = 528,307.36

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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.