Home / 713,769.53-985,038.03-391,509.61

Finding the Fourth Proportional to 713,769.53, 985,038.03 and 391,509.61

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Solution

The fourth proportional to 713,769.53, 985,038.03 and 391,509.61 is: 540,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,769.53 : 985,038.03 = 391,509.61 : x
  2. Step 2: Convert to fraction form
    713,769.53/985,038.03 = 391,509.61/x
  3. Step 3: Cross multiply
    713,769.53x = 985,038.03 × 391,509.61
  4. Step 4: Simplify right side
    713,769.53x = 385,651,852,497.87
  5. Step 5: Solve for x
    x = 385,651,852,497.87/713,769.53
  6. Step 6: Final answer
    x = 540,303.05

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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.