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Finding the Fourth Proportional to 657,636.31, 906,717.28 and 502,779.51

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Solution

The fourth proportional to 657,636.31, 906,717.28 and 502,779.51 is: 693,208.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,636.31 : 906,717.28 = 502,779.51 : x
  2. Step 2: Convert to fraction form
    657,636.31/906,717.28 = 502,779.51/x
  3. Step 3: Cross multiply
    657,636.31x = 906,717.28 × 502,779.51
  4. Step 4: Simplify right side
    657,636.31x = 455,878,862,699.45
  5. Step 5: Solve for x
    x = 455,878,862,699.45/657,636.31
  6. Step 6: Final answer
    x = 693,208.17

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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.