Home / 851,940.81-1,175,468.63-520,712.91

Finding the Fourth Proportional to 851,940.81, 1,175,468.63 and 520,712.91

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Solution

The fourth proportional to 851,940.81, 1,175,468.63 and 520,712.91 is: 718,455.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,940.81 : 1,175,468.63 = 520,712.91 : x
  2. Step 2: Convert to fraction form
    851,940.81/1,175,468.63 = 520,712.91/x
  3. Step 3: Cross multiply
    851,940.81x = 1,175,468.63 × 520,712.91
  4. Step 4: Simplify right side
    851,940.81x = 612,081,688,337.45
  5. Step 5: Solve for x
    x = 612,081,688,337.45/851,940.81
  6. Step 6: Final answer
    x = 718,455.65

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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.