Home / 664,263.72-916,455.42-402,703.38

Finding the Fourth Proportional to 664,263.72, 916,455.42 and 402,703.38

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Solution

The fourth proportional to 664,263.72, 916,455.42 and 402,703.38 is: 555,592.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,263.72 : 916,455.42 = 402,703.38 : x
  2. Step 2: Convert to fraction form
    664,263.72/916,455.42 = 402,703.38/x
  3. Step 3: Cross multiply
    664,263.72x = 916,455.42 × 402,703.38
  4. Step 4: Simplify right side
    664,263.72x = 369,059,693,603.32
  5. Step 5: Solve for x
    x = 369,059,693,603.32/664,263.72
  6. Step 6: Final answer
    x = 555,592.13

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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.