Home / 480,021.10-720,031.65-459,544.30

Finding the Fourth Proportional to 480,021.10, 720,031.65 and 459,544.30

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Solution

The fourth proportional to 480,021.10, 720,031.65 and 459,544.30 is: 689,316.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,021.10 : 720,031.65 = 459,544.30 : x
  2. Step 2: Convert to fraction form
    480,021.10/720,031.65 = 459,544.30/x
  3. Step 3: Cross multiply
    480,021.10x = 720,031.65 × 459,544.30
  4. Step 4: Simplify right side
    480,021.10x = 330,886,440,577.10
  5. Step 5: Solve for x
    x = 330,886,440,577.10/480,021.10
  6. Step 6: Final answer
    x = 689,316.45

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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.