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Finding the Fourth Proportional to 679,657.84, 937,987.58 and 373,788.12

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Solution

The fourth proportional to 679,657.84, 937,987.58 and 373,788.12 is: 515,860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,657.84 : 937,987.58 = 373,788.12 : x
  2. Step 2: Convert to fraction form
    679,657.84/937,987.58 = 373,788.12/x
  3. Step 3: Cross multiply
    679,657.84x = 937,987.58 × 373,788.12
  4. Step 4: Simplify right side
    679,657.84x = 350,608,614,111.55
  5. Step 5: Solve for x
    x = 350,608,614,111.55/679,657.84
  6. Step 6: Final answer
    x = 515,860.47

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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.