Home / 939,122.71-1,295,980.15-509,396.65

Finding the Fourth Proportional to 939,122.71, 1,295,980.15 and 509,396.65

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Solution

The fourth proportional to 939,122.71, 1,295,980.15 and 509,396.65 is: 702,962.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,122.71 : 1,295,980.15 = 509,396.65 : x
  2. Step 2: Convert to fraction form
    939,122.71/1,295,980.15 = 509,396.65/x
  3. Step 3: Cross multiply
    939,122.71x = 1,295,980.15 × 509,396.65
  4. Step 4: Simplify right side
    939,122.71x = 660,167,946,876.50
  5. Step 5: Solve for x
    x = 660,167,946,876.50/939,122.71
  6. Step 6: Final answer
    x = 702,962.39

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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.