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Finding the Fourth Proportional to 520,385.16, 717,868.44 and 348,310.44

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Solution

The fourth proportional to 520,385.16, 717,868.44 and 348,310.44 is: 480,492.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,385.16 : 717,868.44 = 348,310.44 : x
  2. Step 2: Convert to fraction form
    520,385.16/717,868.44 = 348,310.44/x
  3. Step 3: Cross multiply
    520,385.16x = 717,868.44 × 348,310.44
  4. Step 4: Simplify right side
    520,385.16x = 250,041,072,198.51
  5. Step 5: Solve for x
    x = 250,041,072,198.51/520,385.16
  6. Step 6: Final answer
    x = 480,492.32

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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.