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Finding the Fourth Proportional to 674,242.83, 930,483.38 and 387,763.13

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Solution

The fourth proportional to 674,242.83, 930,483.38 and 387,763.13 is: 535,129.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,242.83 : 930,483.38 = 387,763.13 : x
  2. Step 2: Convert to fraction form
    674,242.83/930,483.38 = 387,763.13/x
  3. Step 3: Cross multiply
    674,242.83x = 930,483.38 × 387,763.13
  4. Step 4: Simplify right side
    674,242.83x = 360,807,151,137.40
  5. Step 5: Solve for x
    x = 360,807,151,137.40/674,242.83
  6. Step 6: Final answer
    x = 535,129.39

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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.