Home / 459,001.20-688,501.80-412,345.20

Finding the Fourth Proportional to 459,001.20, 688,501.80 and 412,345.20

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Solution

The fourth proportional to 459,001.20, 688,501.80 and 412,345.20 is: 618,517.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,001.20 : 688,501.80 = 412,345.20 : x
  2. Step 2: Convert to fraction form
    459,001.20/688,501.80 = 412,345.20/x
  3. Step 3: Cross multiply
    459,001.20x = 688,501.80 × 412,345.20
  4. Step 4: Simplify right side
    459,001.20x = 283,900,412,421.36
  5. Step 5: Solve for x
    x = 283,900,412,421.36/459,001.20
  6. Step 6: Final answer
    x = 618,517.80

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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.