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Finding the Fourth Proportional to 1,038,310, 1,432,867.80 and 561,382

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Solution

The fourth proportional to 1,038,310, 1,432,867.80 and 561,382 is: 774,707.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,310 : 1,432,867.80 = 561,382 : x
  2. Step 2: Convert to fraction form
    1,038,310/1,432,867.80 = 561,382/x
  3. Step 3: Cross multiply
    1,038,310x = 1,432,867.80 × 561,382
  4. Step 4: Simplify right side
    1,038,310x = 804,386,191,299.60
  5. Step 5: Solve for x
    x = 804,386,191,299.60/1,038,310
  6. Step 6: Final answer
    x = 774,707.16

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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.