Home / 661,821.41-913,513.20-572,140.74

Finding the Fourth Proportional to 661,821.41, 913,513.20 and 572,140.74

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Solution

The fourth proportional to 661,821.41, 913,513.20 and 572,140.74 is: 789,726.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,821.41 : 913,513.20 = 572,140.74 : x
  2. Step 2: Convert to fraction form
    661,821.41/913,513.20 = 572,140.74/x
  3. Step 3: Cross multiply
    661,821.41x = 913,513.20 × 572,140.74
  4. Step 4: Simplify right side
    661,821.41x = 522,658,118,247.77
  5. Step 5: Solve for x
    x = 522,658,118,247.77/661,821.41
  6. Step 6: Final answer
    x = 789,726.82

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1.5x scale

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.