Home / 662,056.65-991,831.53-391,374.40

Finding the Fourth Proportional to 662,056.65, 991,831.53 and 391,374.40

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Solution

The fourth proportional to 662,056.65, 991,831.53 and 391,374.40 is: 586,320.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,056.65 : 991,831.53 = 391,374.40 : x
  2. Step 2: Convert to fraction form
    662,056.65/991,831.53 = 391,374.40/x
  3. Step 3: Cross multiply
    662,056.65x = 991,831.53 × 391,374.40
  4. Step 4: Simplify right side
    662,056.65x = 388,177,464,995.67
  5. Step 5: Solve for x
    x = 388,177,464,995.67/662,056.65
  6. Step 6: Final answer
    x = 586,320.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.