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Finding the Fourth Proportional to 1,038,499, 1,433,128.70 and 561,571

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Solution

The fourth proportional to 1,038,499, 1,433,128.70 and 561,571 is: 774,968.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,499 : 1,433,128.70 = 561,571 : x
  2. Step 2: Convert to fraction form
    1,038,499/1,433,128.70 = 561,571/x
  3. Step 3: Cross multiply
    1,038,499x = 1,433,128.70 × 561,571
  4. Step 4: Simplify right side
    1,038,499x = 804,803,517,187.70
  5. Step 5: Solve for x
    x = 804,803,517,187.70/1,038,499
  6. Step 6: Final answer
    x = 774,968.02

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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.