Home / 611,555.20-916,895.40-274,319.80

Finding the Fourth Proportional to 611,555.20, 916,895.40 and 274,319.80

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Solution

The fourth proportional to 611,555.20, 916,895.40 and 274,319.80 is: 411,283.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,555.20 : 916,895.40 = 274,319.80 : x
  2. Step 2: Convert to fraction form
    611,555.20/916,895.40 = 274,319.80/x
  3. Step 3: Cross multiply
    611,555.20x = 916,895.40 × 274,319.80
  4. Step 4: Simplify right side
    611,555.20x = 251,522,562,748.92
  5. Step 5: Solve for x
    x = 251,522,562,748.92/611,555.20
  6. Step 6: Final answer
    x = 411,283.50

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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.