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Finding the Fourth Proportional to 670,018.96, 924,661.62 and 379,686.80

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Solution

The fourth proportional to 670,018.96, 924,661.62 and 379,686.80 is: 523,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,018.96 : 924,661.62 = 379,686.80 : x
  2. Step 2: Convert to fraction form
    670,018.96/924,661.62 = 379,686.80/x
  3. Step 3: Cross multiply
    670,018.96x = 924,661.62 × 379,686.80
  4. Step 4: Simplify right side
    670,018.96x = 351,081,811,580.62
  5. Step 5: Solve for x
    x = 351,081,811,580.62/670,018.96
  6. Step 6: Final answer
    x = 523,987.88

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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.