Home / 690,424.52-1,035,681.42-217,128.20

Finding the Fourth Proportional to 690,424.52, 1,035,681.42 and 217,128.20

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Solution

The fourth proportional to 690,424.52, 1,035,681.42 and 217,128.20 is: 325,706.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,424.52 : 1,035,681.42 = 217,128.20 : x
  2. Step 2: Convert to fraction form
    690,424.52/1,035,681.42 = 217,128.20/x
  3. Step 3: Cross multiply
    690,424.52x = 1,035,681.42 × 217,128.20
  4. Step 4: Simplify right side
    690,424.52x = 224,875,642,498.04
  5. Step 5: Solve for x
    x = 224,875,642,498.04/690,424.52
  6. Step 6: Final answer
    x = 325,706.34

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Double scale
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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.