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Finding the Fourth Proportional to 679,496.71, 937,706.06 and 373,578.30

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Solution

The fourth proportional to 679,496.71, 937,706.06 and 373,578.30 is: 515,538.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,496.71 : 937,706.06 = 373,578.30 : x
  2. Step 2: Convert to fraction form
    679,496.71/937,706.06 = 373,578.30/x
  3. Step 3: Cross multiply
    679,496.71x = 937,706.06 × 373,578.30
  4. Step 4: Simplify right side
    679,496.71x = 350,306,637,318.15
  5. Step 5: Solve for x
    x = 350,306,637,318.15/679,496.71
  6. Step 6: Final answer
    x = 515,538.38

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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.