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Finding the Fourth Proportional to 702,805.71, 969,870.58 and 380,515.75

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Solution

The fourth proportional to 702,805.71, 969,870.58 and 380,515.75 is: 525,111.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,805.71 : 969,870.58 = 380,515.75 : x
  2. Step 2: Convert to fraction form
    702,805.71/969,870.58 = 380,515.75/x
  3. Step 3: Cross multiply
    702,805.71x = 969,870.58 × 380,515.75
  4. Step 4: Simplify right side
    702,805.71x = 369,051,031,151.64
  5. Step 5: Solve for x
    x = 369,051,031,151.64/702,805.71
  6. Step 6: Final answer
    x = 525,111.03

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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.