Home / 987,000.40-1,480,846.20-426,437.20

Finding the Fourth Proportional to 987,000.40, 1,480,846.20 and 426,437.20

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Solution

The fourth proportional to 987,000.40, 1,480,846.20 and 426,437.20 is: 639,805.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,000.40 : 1,480,846.20 = 426,437.20 : x
  2. Step 2: Convert to fraction form
    987,000.40/1,480,846.20 = 426,437.20/x
  3. Step 3: Cross multiply
    987,000.40x = 1,480,846.20 × 426,437.20
  4. Step 4: Simplify right side
    987,000.40x = 631,487,907,158.64
  5. Step 5: Solve for x
    x = 631,487,907,158.64/987,000.40
  6. Step 6: Final answer
    x = 639,805.12

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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.