Home / 742,228.84-1,113,343.26-426,484.36

Finding the Fourth Proportional to 742,228.84, 1,113,343.26 and 426,484.36

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Solution

The fourth proportional to 742,228.84, 1,113,343.26 and 426,484.36 is: 639,726.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,228.84 : 1,113,343.26 = 426,484.36 : x
  2. Step 2: Convert to fraction form
    742,228.84/1,113,343.26 = 426,484.36/x
  3. Step 3: Cross multiply
    742,228.84x = 1,113,343.26 × 426,484.36
  4. Step 4: Simplify right side
    742,228.84x = 474,823,487,701.41
  5. Step 5: Solve for x
    x = 474,823,487,701.41/742,228.84
  6. Step 6: Final answer
    x = 639,726.54

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.