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Finding the Fourth Proportional to 1,038,319, 1,432,880.22 and 561,391

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Solution

The fourth proportional to 1,038,319, 1,432,880.22 and 561,391 is: 774,719.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,319 : 1,432,880.22 = 561,391 : x
  2. Step 2: Convert to fraction form
    1,038,319/1,432,880.22 = 561,391/x
  3. Step 3: Cross multiply
    1,038,319x = 1,432,880.22 × 561,391
  4. Step 4: Simplify right side
    1,038,319x = 804,406,059,586.02
  5. Step 5: Solve for x
    x = 804,406,059,586.02/1,038,319
  6. Step 6: Final answer
    x = 774,719.58

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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.