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Finding the Fourth Proportional to 486,118.32, 670,666.08 and 302,344.80

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Solution

The fourth proportional to 486,118.32, 670,666.08 and 302,344.80 is: 417,125.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,118.32 : 670,666.08 = 302,344.80 : x
  2. Step 2: Convert to fraction form
    486,118.32/670,666.08 = 302,344.80/x
  3. Step 3: Cross multiply
    486,118.32x = 670,666.08 × 302,344.80
  4. Step 4: Simplify right side
    486,118.32x = 202,772,401,824.38
  5. Step 5: Solve for x
    x = 202,772,401,824.38/486,118.32
  6. Step 6: Final answer
    x = 417,125.61

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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.