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Finding the Fourth Proportional to 642,574.34, 887,155.77 and 413,529.67

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Solution

The fourth proportional to 642,574.34, 887,155.77 and 413,529.67 is: 570,930.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,574.34 : 887,155.77 = 413,529.67 : x
  2. Step 2: Convert to fraction form
    642,574.34/887,155.77 = 413,529.67/x
  3. Step 3: Cross multiply
    642,574.34x = 887,155.77 × 413,529.67
  4. Step 4: Simplify right side
    642,574.34x = 366,865,232,806.70
  5. Step 5: Solve for x
    x = 366,865,232,806.70/642,574.34
  6. Step 6: Final answer
    x = 570,930.42

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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.