Home / 642,986.17-963,875.79-216,223.59

Finding the Fourth Proportional to 642,986.17, 963,875.79 and 216,223.59

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Solution

The fourth proportional to 642,986.17, 963,875.79 and 216,223.59 is: 324,132.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,986.17 : 963,875.79 = 216,223.59 : x
  2. Step 2: Convert to fraction form
    642,986.17/963,875.79 = 216,223.59/x
  3. Step 3: Cross multiply
    642,986.17x = 963,875.79 × 216,223.59
  4. Step 4: Simplify right side
    642,986.17x = 208,412,683,627.89
  5. Step 5: Solve for x
    x = 208,412,683,627.89/642,986.17
  6. Step 6: Final answer
    x = 324,132.45

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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.