Home / 987,088.40-1,480,978.20-426,525.20

Finding the Fourth Proportional to 987,088.40, 1,480,978.20 and 426,525.20

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Solution

The fourth proportional to 987,088.40, 1,480,978.20 and 426,525.20 is: 639,937.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,088.40 : 1,480,978.20 = 426,525.20 : x
  2. Step 2: Convert to fraction form
    987,088.40/1,480,978.20 = 426,525.20/x
  3. Step 3: Cross multiply
    987,088.40x = 1,480,978.20 × 426,525.20
  4. Step 4: Simplify right side
    987,088.40x = 631,674,522,950.64
  5. Step 5: Solve for x
    x = 631,674,522,950.64/987,088.40
  6. Step 6: Final answer
    x = 639,937.14

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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.