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Finding the Fourth Proportional to 590,385.78, 885,513.06 and 211,291.20

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Solution

The fourth proportional to 590,385.78, 885,513.06 and 211,291.20 is: 316,913.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,385.78 : 885,513.06 = 211,291.20 : x
  2. Step 2: Convert to fraction form
    590,385.78/885,513.06 = 211,291.20/x
  3. Step 3: Cross multiply
    590,385.78x = 885,513.06 × 211,291.20
  4. Step 4: Simplify right side
    590,385.78x = 187,101,117,063.07
  5. Step 5: Solve for x
    x = 187,101,117,063.07/590,385.78
  6. Step 6: Final answer
    x = 316,913.32

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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.