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Finding the Fourth Proportional to 612,826.80, 845,698.68 and 358,127.52

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Solution

The fourth proportional to 612,826.80, 845,698.68 and 358,127.52 is: 494,214.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,826.80 : 845,698.68 = 358,127.52 : x
  2. Step 2: Convert to fraction form
    612,826.80/845,698.68 = 358,127.52/x
  3. Step 3: Cross multiply
    612,826.80x = 845,698.68 × 358,127.52
  4. Step 4: Simplify right side
    612,826.80x = 302,867,970,935.67
  5. Step 5: Solve for x
    x = 302,867,970,935.67/612,826.80
  6. Step 6: Final answer
    x = 494,214.63

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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.