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Finding the Fourth Proportional to 679,732.76, 938,012.50 and 373,809.14

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Solution

The fourth proportional to 679,732.76, 938,012.50 and 373,809.14 is: 515,846.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,732.76 : 938,012.50 = 373,809.14 : x
  2. Step 2: Convert to fraction form
    679,732.76/938,012.50 = 373,809.14/x
  3. Step 3: Cross multiply
    679,732.76x = 938,012.50 × 373,809.14
  4. Step 4: Simplify right side
    679,732.76x = 350,637,645,934.25
  5. Step 5: Solve for x
    x = 350,637,645,934.25/679,732.76
  6. Step 6: Final answer
    x = 515,846.32

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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.