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Finding the Fourth Proportional to 646,008.38, 891,482.74 and 359,528.54

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Solution

The fourth proportional to 646,008.38, 891,482.74 and 359,528.54 is: 496,144.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,008.38 : 891,482.74 = 359,528.54 : x
  2. Step 2: Convert to fraction form
    646,008.38/891,482.74 = 359,528.54/x
  3. Step 3: Cross multiply
    646,008.38x = 891,482.74 × 359,528.54
  4. Step 4: Simplify right side
    646,008.38x = 320,513,487,947.40
  5. Step 5: Solve for x
    x = 320,513,487,947.40/646,008.38
  6. Step 6: Final answer
    x = 496,144.47

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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.