Home / 688,445.56-1,032,312-309,039.60

Finding the Fourth Proportional to 688,445.56, 1,032,312 and 309,039.60

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Solution

The fourth proportional to 688,445.56, 1,032,312 and 309,039.60 is: 463,399.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,445.56 : 1,032,312 = 309,039.60 : x
  2. Step 2: Convert to fraction form
    688,445.56/1,032,312 = 309,039.60/x
  3. Step 3: Cross multiply
    688,445.56x = 1,032,312 × 309,039.60
  4. Step 4: Simplify right side
    688,445.56x = 319,025,287,555.20
  5. Step 5: Solve for x
    x = 319,025,287,555.20/688,445.56
  6. Step 6: Final answer
    x = 463,399.44

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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.