Home / 744,014.76-1,026,820.53-421,690.20

Finding the Fourth Proportional to 744,014.76, 1,026,820.53 and 421,690.20

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Solution

The fourth proportional to 744,014.76, 1,026,820.53 and 421,690.20 is: 581,977.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,014.76 : 1,026,820.53 = 421,690.20 : x
  2. Step 2: Convert to fraction form
    744,014.76/1,026,820.53 = 421,690.20/x
  3. Step 3: Cross multiply
    744,014.76x = 1,026,820.53 × 421,690.20
  4. Step 4: Simplify right side
    744,014.76x = 433,000,154,659.81
  5. Step 5: Solve for x
    x = 433,000,154,659.81/744,014.76
  6. Step 6: Final answer
    x = 581,977.91

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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.