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Finding the Fourth Proportional to 642,810.24, 887,088.12 and 352,448.33

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Solution

The fourth proportional to 642,810.24, 887,088.12 and 352,448.33 is: 486,384.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,810.24 : 887,088.12 = 352,448.33 : x
  2. Step 2: Convert to fraction form
    642,810.24/887,088.12 = 352,448.33/x
  3. Step 3: Cross multiply
    642,810.24x = 887,088.12 × 352,448.33
  4. Step 4: Simplify right side
    642,810.24x = 312,652,722,021.40
  5. Step 5: Solve for x
    x = 312,652,722,021.40/642,810.24
  6. Step 6: Final answer
    x = 486,384.17

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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.