Home / 816,047.20-1,224,070.80-343,266.40

Finding the Fourth Proportional to 816,047.20, 1,224,070.80 and 343,266.40

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Solution

The fourth proportional to 816,047.20, 1,224,070.80 and 343,266.40 is: 514,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,047.20 : 1,224,070.80 = 343,266.40 : x
  2. Step 2: Convert to fraction form
    816,047.20/1,224,070.80 = 343,266.40/x
  3. Step 3: Cross multiply
    816,047.20x = 1,224,070.80 × 343,266.40
  4. Step 4: Simplify right side
    816,047.20x = 420,182,376,861.12
  5. Step 5: Solve for x
    x = 420,182,376,861.12/816,047.20
  6. Step 6: Final answer
    x = 514,899.60

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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.