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Finding the Fourth Proportional to 646,038.94, 891,532.80 and 359,552.20

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Solution

The fourth proportional to 646,038.94, 891,532.80 and 359,552.20 is: 496,181.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,038.94 : 891,532.80 = 359,552.20 : x
  2. Step 2: Convert to fraction form
    646,038.94/891,532.80 = 359,552.20/x
  3. Step 3: Cross multiply
    646,038.94x = 891,532.80 × 359,552.20
  4. Step 4: Simplify right side
    646,038.94x = 320,552,579,612.16
  5. Step 5: Solve for x
    x = 320,552,579,612.16/646,038.94
  6. Step 6: Final answer
    x = 496,181.51

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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.