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Finding the Fourth Proportional to 657,026.40, 906,697.44 and 355,220.32

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Solution

The fourth proportional to 657,026.40, 906,697.44 and 355,220.32 is: 490,204.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,026.40 : 906,697.44 = 355,220.32 : x
  2. Step 2: Convert to fraction form
    657,026.40/906,697.44 = 355,220.32/x
  3. Step 3: Cross multiply
    657,026.40x = 906,697.44 × 355,220.32
  4. Step 4: Simplify right side
    657,026.40x = 322,077,354,779.98
  5. Step 5: Solve for x
    x = 322,077,354,779.98/657,026.40
  6. Step 6: Final answer
    x = 490,204.59

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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.