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Finding the Fourth Proportional to 475,379.80, 713,069.70 and 400,730.20

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Solution

The fourth proportional to 475,379.80, 713,069.70 and 400,730.20 is: 601,095.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,379.80 : 713,069.70 = 400,730.20 : x
  2. Step 2: Convert to fraction form
    475,379.80/713,069.70 = 400,730.20/x
  3. Step 3: Cross multiply
    475,379.80x = 713,069.70 × 400,730.20
  4. Step 4: Simplify right side
    475,379.80x = 285,748,563,494.94
  5. Step 5: Solve for x
    x = 285,748,563,494.94/475,379.80
  6. Step 6: Final answer
    x = 601,095.30

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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.