Home / 738,522.11-1,019,160.53-398,990.36

Finding the Fourth Proportional to 738,522.11, 1,019,160.53 and 398,990.36

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Solution

The fourth proportional to 738,522.11, 1,019,160.53 and 398,990.36 is: 550,606.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,522.11 : 1,019,160.53 = 398,990.36 : x
  2. Step 2: Convert to fraction form
    738,522.11/1,019,160.53 = 398,990.36/x
  3. Step 3: Cross multiply
    738,522.11x = 1,019,160.53 × 398,990.36
  4. Step 4: Simplify right side
    738,522.11x = 406,635,219,671.74
  5. Step 5: Solve for x
    x = 406,635,219,671.74/738,522.11
  6. Step 6: Final answer
    x = 550,606.70

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Double scale
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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.