Home / 388,935.70-583,403.55-355,693.30

Finding the Fourth Proportional to 388,935.70, 583,403.55 and 355,693.30

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Solution

The fourth proportional to 388,935.70, 583,403.55 and 355,693.30 is: 533,539.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,935.70 : 583,403.55 = 355,693.30 : x
  2. Step 2: Convert to fraction form
    388,935.70/583,403.55 = 355,693.30/x
  3. Step 3: Cross multiply
    388,935.70x = 583,403.55 × 355,693.30
  4. Step 4: Simplify right side
    388,935.70x = 207,512,733,931.22
  5. Step 5: Solve for x
    x = 207,512,733,931.22/388,935.70
  6. Step 6: Final answer
    x = 533,539.95

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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.