Home / 989,989.35-1,485,009.63-316,070.07

Finding the Fourth Proportional to 989,989.35, 1,485,009.63 and 316,070.07

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Solution

The fourth proportional to 989,989.35, 1,485,009.63 and 316,070.07 is: 474,113.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,989.35 : 1,485,009.63 = 316,070.07 : x
  2. Step 2: Convert to fraction form
    989,989.35/1,485,009.63 = 316,070.07/x
  3. Step 3: Cross multiply
    989,989.35x = 1,485,009.63 × 316,070.07
  4. Step 4: Simplify right side
    989,989.35x = 469,367,097,704.77
  5. Step 5: Solve for x
    x = 469,367,097,704.77/989,989.35
  6. Step 6: Final answer
    x = 474,113.28

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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.