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Finding the Fourth Proportional to 626,861.80, 940,811.10 and 290,420.20

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Solution

The fourth proportional to 626,861.80, 940,811.10 and 290,420.20 is: 435,870.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,861.80 : 940,811.10 = 290,420.20 : x
  2. Step 2: Convert to fraction form
    626,861.80/940,811.10 = 290,420.20/x
  3. Step 3: Cross multiply
    626,861.80x = 940,811.10 × 290,420.20
  4. Step 4: Simplify right side
    626,861.80x = 273,230,547,824.22
  5. Step 5: Solve for x
    x = 273,230,547,824.22/626,861.80
  6. Step 6: Final answer
    x = 435,870.47

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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.