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Finding the Fourth Proportional to 679,396.69, 937,570.47 and 373,492.74

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Solution

The fourth proportional to 679,396.69, 937,570.47 and 373,492.74 is: 515,421.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,396.69 : 937,570.47 = 373,492.74 : x
  2. Step 2: Convert to fraction form
    679,396.69/937,570.47 = 373,492.74/x
  3. Step 3: Cross multiply
    679,396.69x = 937,570.47 × 373,492.74
  4. Step 4: Simplify right side
    679,396.69x = 350,175,765,898.68
  5. Step 5: Solve for x
    x = 350,175,765,898.68/679,396.69
  6. Step 6: Final answer
    x = 515,421.65

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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.