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Finding the Fourth Proportional to 679,980.76, 938,375.48 and 374,088.51

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Solution

The fourth proportional to 679,980.76, 938,375.48 and 374,088.51 is: 516,243.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,980.76 : 938,375.48 = 374,088.51 : x
  2. Step 2: Convert to fraction form
    679,980.76/938,375.48 = 374,088.51/x
  3. Step 3: Cross multiply
    679,980.76x = 938,375.48 × 374,088.51
  4. Step 4: Simplify right side
    679,980.76x = 351,035,486,068.96
  5. Step 5: Solve for x
    x = 351,035,486,068.96/679,980.76
  6. Step 6: Final answer
    x = 516,243.26

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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.