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Finding the Fourth Proportional to 657,315.64, 907,095.64 and 355,509.64

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Solution

The fourth proportional to 657,315.64, 907,095.64 and 355,509.64 is: 490,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,315.64 : 907,095.64 = 355,509.64 : x
  2. Step 2: Convert to fraction form
    657,315.64/907,095.64 = 355,509.64/x
  3. Step 3: Cross multiply
    657,315.64x = 907,095.64 × 355,509.64
  4. Step 4: Simplify right side
    657,315.64x = 322,481,244,421.97
  5. Step 5: Solve for x
    x = 322,481,244,421.97/657,315.64
  6. Step 6: Final answer
    x = 490,603.33

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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.