Home / 657,372.76-907,174.02-355,566.76

Finding the Fourth Proportional to 657,372.76, 907,174.02 and 355,566.76

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Solution

The fourth proportional to 657,372.76, 907,174.02 and 355,566.76 is: 490,681.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,372.76 : 907,174.02 = 355,566.76 : x
  2. Step 2: Convert to fraction form
    657,372.76/907,174.02 = 355,566.76/x
  3. Step 3: Cross multiply
    657,372.76x = 907,174.02 × 355,566.76
  4. Step 4: Simplify right side
    657,372.76x = 322,560,927,047.58
  5. Step 5: Solve for x
    x = 322,560,927,047.58/657,372.76
  6. Step 6: Final answer
    x = 490,681.92

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Half scale
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Double scale
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Similar ratio
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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.