Home / 642,588.99-962,831.89-389,947.15

Finding the Fourth Proportional to 642,588.99, 962,831.89 and 389,947.15

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Solution

The fourth proportional to 642,588.99, 962,831.89 and 389,947.15 is: 584,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,588.99 : 962,831.89 = 389,947.15 : x
  2. Step 2: Convert to fraction form
    642,588.99/962,831.89 = 389,947.15/x
  3. Step 3: Cross multiply
    642,588.99x = 962,831.89 × 389,947.15
  4. Step 4: Simplify right side
    642,588.99x = 375,453,551,434.61
  5. Step 5: Solve for x
    x = 375,453,551,434.61/642,588.99
  6. Step 6: Final answer
    x = 584,282.58

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1.5x scale

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.