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Finding the Fourth Proportional to 1,313,988, 1,813,305.90 and 710,376

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Solution

The fourth proportional to 1,313,988, 1,813,305.90 and 710,376 is: 980,320.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,988 : 1,813,305.90 = 710,376 : x
  2. Step 2: Convert to fraction form
    1,313,988/1,813,305.90 = 710,376/x
  3. Step 3: Cross multiply
    1,313,988x = 1,813,305.90 × 710,376
  4. Step 4: Simplify right side
    1,313,988x = 1,288,128,992,018.40
  5. Step 5: Solve for x
    x = 1,288,128,992,018.40/1,313,988
  6. Step 6: Final answer
    x = 980,320.21

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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.