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Finding the Fourth Proportional to 578,660.13, 797,810.70 and 397,056.69

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Solution

The fourth proportional to 578,660.13, 797,810.70 and 397,056.69 is: 547,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,660.13 : 797,810.70 = 397,056.69 : x
  2. Step 2: Convert to fraction form
    578,660.13/797,810.70 = 397,056.69/x
  3. Step 3: Cross multiply
    578,660.13x = 797,810.70 × 397,056.69
  4. Step 4: Simplify right side
    578,660.13x = 316,776,075,788.58
  5. Step 5: Solve for x
    x = 316,776,075,788.58/578,660.13
  6. Step 6: Final answer
    x = 547,430.28

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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.