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Finding the Fourth Proportional to 1,038,278, 1,432,823.64 and 561,350

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Solution

The fourth proportional to 1,038,278, 1,432,823.64 and 561,350 is: 774,663

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,278 : 1,432,823.64 = 561,350 : x
  2. Step 2: Convert to fraction form
    1,038,278/1,432,823.64 = 561,350/x
  3. Step 3: Cross multiply
    1,038,278x = 1,432,823.64 × 561,350
  4. Step 4: Simplify right side
    1,038,278x = 804,315,550,314
  5. Step 5: Solve for x
    x = 804,315,550,314/1,038,278
  6. Step 6: Final answer
    x = 774,663

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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.