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Finding the Fourth Proportional to 480,020.60, 720,030.90 and 459,543.80

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Solution

The fourth proportional to 480,020.60, 720,030.90 and 459,543.80 is: 689,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,020.60 : 720,030.90 = 459,543.80 : x
  2. Step 2: Convert to fraction form
    480,020.60/720,030.90 = 459,543.80/x
  3. Step 3: Cross multiply
    480,020.60x = 720,030.90 × 459,543.80
  4. Step 4: Simplify right side
    480,020.60x = 330,885,735,903.42
  5. Step 5: Solve for x
    x = 330,885,735,903.42/480,020.60
  6. Step 6: Final answer
    x = 689,315.70

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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.