Home / 709,738.60-1,064,607.90-289,316.20

Finding the Fourth Proportional to 709,738.60, 1,064,607.90 and 289,316.20

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Solution

The fourth proportional to 709,738.60, 1,064,607.90 and 289,316.20 is: 433,974.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,738.60 : 1,064,607.90 = 289,316.20 : x
  2. Step 2: Convert to fraction form
    709,738.60/1,064,607.90 = 289,316.20/x
  3. Step 3: Cross multiply
    709,738.60x = 1,064,607.90 × 289,316.20
  4. Step 4: Simplify right side
    709,738.60x = 308,008,312,117.98
  5. Step 5: Solve for x
    x = 308,008,312,117.98/709,738.60
  6. Step 6: Final answer
    x = 433,974.30

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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.