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Finding the Fourth Proportional to 679,130.89, 936,810.33 and 424,039.21

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Solution

The fourth proportional to 679,130.89, 936,810.33 and 424,039.21 is: 584,930.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,130.89 : 936,810.33 = 424,039.21 : x
  2. Step 2: Convert to fraction form
    679,130.89/936,810.33 = 424,039.21/x
  3. Step 3: Cross multiply
    679,130.89x = 936,810.33 × 424,039.21
  4. Step 4: Simplify right side
    679,130.89x = 397,244,312,253.04
  5. Step 5: Solve for x
    x = 397,244,312,253.04/679,130.89
  6. Step 6: Final answer
    x = 584,930.41

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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.