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Finding the Fourth Proportional to 790,417, 1,090,775.46 and 432,721

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Solution

The fourth proportional to 790,417, 1,090,775.46 and 432,721 is: 597,154.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,417 : 1,090,775.46 = 432,721 : x
  2. Step 2: Convert to fraction form
    790,417/1,090,775.46 = 432,721/x
  3. Step 3: Cross multiply
    790,417x = 1,090,775.46 × 432,721
  4. Step 4: Simplify right side
    790,417x = 472,001,447,826.66
  5. Step 5: Solve for x
    x = 472,001,447,826.66/790,417
  6. Step 6: Final answer
    x = 597,154.98

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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.