Home / 538,389.51-742,926.76-317,592.39

Finding the Fourth Proportional to 538,389.51, 742,926.76 and 317,592.39

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Solution

The fourth proportional to 538,389.51, 742,926.76 and 317,592.39 is: 438,247.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,389.51 : 742,926.76 = 317,592.39 : x
  2. Step 2: Convert to fraction form
    538,389.51/742,926.76 = 317,592.39/x
  3. Step 3: Cross multiply
    538,389.51x = 742,926.76 × 317,592.39
  4. Step 4: Simplify right side
    538,389.51x = 235,947,885,303.36
  5. Step 5: Solve for x
    x = 235,947,885,303.36/538,389.51
  6. Step 6: Final answer
    x = 438,247.55

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Double scale
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Similar ratio
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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.