Home / 709,346.90-1,064,020.35-288,406.10

Finding the Fourth Proportional to 709,346.90, 1,064,020.35 and 288,406.10

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Solution

The fourth proportional to 709,346.90, 1,064,020.35 and 288,406.10 is: 432,609.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,346.90 : 1,064,020.35 = 288,406.10 : x
  2. Step 2: Convert to fraction form
    709,346.90/1,064,020.35 = 288,406.10/x
  3. Step 3: Cross multiply
    709,346.90x = 1,064,020.35 × 288,406.10
  4. Step 4: Simplify right side
    709,346.90x = 306,869,959,464.14
  5. Step 5: Solve for x
    x = 306,869,959,464.14/709,346.90
  6. Step 6: Final answer
    x = 432,609.15

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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.