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Finding the Fourth Proportional to 918,042, 1,266,870.60 and 510,142.56

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Solution

The fourth proportional to 918,042, 1,266,870.60 and 510,142.56 is: 703,981.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,042 : 1,266,870.60 = 510,142.56 : x
  2. Step 2: Convert to fraction form
    918,042/1,266,870.60 = 510,142.56/x
  3. Step 3: Cross multiply
    918,042x = 1,266,870.60 × 510,142.56
  4. Step 4: Simplify right side
    918,042x = 646,284,611,072.74
  5. Step 5: Solve for x
    x = 646,284,611,072.74/918,042
  6. Step 6: Final answer
    x = 703,981.53

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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.