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Finding the Fourth Proportional to 657,353.25, 907,149.11 and 355,547.25

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Solution

The fourth proportional to 657,353.25, 907,149.11 and 355,547.25 is: 490,656.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,353.25 : 907,149.11 = 355,547.25 : x
  2. Step 2: Convert to fraction form
    657,353.25/907,149.11 = 355,547.25/x
  3. Step 3: Cross multiply
    657,353.25x = 907,149.11 × 355,547.25
  4. Step 4: Simplify right side
    657,353.25x = 322,534,369,622.71
  5. Step 5: Solve for x
    x = 322,534,369,622.71/657,353.25
  6. Step 6: Final answer
    x = 490,656.08

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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.