Home / 910,400.20-1,365,600.30-438,008.20

Finding the Fourth Proportional to 910,400.20, 1,365,600.30 and 438,008.20

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Solution

The fourth proportional to 910,400.20, 1,365,600.30 and 438,008.20 is: 657,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,400.20 : 1,365,600.30 = 438,008.20 : x
  2. Step 2: Convert to fraction form
    910,400.20/1,365,600.30 = 438,008.20/x
  3. Step 3: Cross multiply
    910,400.20x = 1,365,600.30 × 438,008.20
  4. Step 4: Simplify right side
    910,400.20x = 598,144,129,322.46
  5. Step 5: Solve for x
    x = 598,144,129,322.46/910,400.20
  6. Step 6: Final answer
    x = 657,012.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.