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Finding the Fourth Proportional to 611,152.80, 918,111.60 and 424,528.80

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Solution

The fourth proportional to 611,152.80, 918,111.60 and 424,528.80 is: 637,753.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,152.80 : 918,111.60 = 424,528.80 : x
  2. Step 2: Convert to fraction form
    611,152.80/918,111.60 = 424,528.80/x
  3. Step 3: Cross multiply
    611,152.80x = 918,111.60 × 424,528.80
  4. Step 4: Simplify right side
    611,152.80x = 389,764,815,814.08
  5. Step 5: Solve for x
    x = 389,764,815,814.08/611,152.80
  6. Step 6: Final answer
    x = 637,753.46

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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.