Home / 762,699.16-1,144,349.70-289,510.12

Finding the Fourth Proportional to 762,699.16, 1,144,349.70 and 289,510.12

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Solution

The fourth proportional to 762,699.16, 1,144,349.70 and 289,510.12 is: 434,379.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,699.16 : 1,144,349.70 = 289,510.12 : x
  2. Step 2: Convert to fraction form
    762,699.16/1,144,349.70 = 289,510.12/x
  3. Step 3: Cross multiply
    762,699.16x = 1,144,349.70 × 289,510.12
  4. Step 4: Simplify right side
    762,699.16x = 331,300,818,968.96
  5. Step 5: Solve for x
    x = 331,300,818,968.96/762,699.16
  6. Step 6: Final answer
    x = 434,379.42

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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.