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Finding the Fourth Proportional to 885,495.80, 1,326,712.80 and 411,208.40

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Solution

The fourth proportional to 885,495.80, 1,326,712.80 and 411,208.40 is: 616,101.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,495.80 : 1,326,712.80 = 411,208.40 : x
  2. Step 2: Convert to fraction form
    885,495.80/1,326,712.80 = 411,208.40/x
  3. Step 3: Cross multiply
    885,495.80x = 1,326,712.80 × 411,208.40
  4. Step 4: Simplify right side
    885,495.80x = 545,555,447,747.52
  5. Step 5: Solve for x
    x = 545,555,447,747.52/885,495.80
  6. Step 6: Final answer
    x = 616,101.68

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1.5x scale

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.