Home / 730,128-1,008,038.80-501,068.64

Finding the Fourth Proportional to 730,128, 1,008,038.80 and 501,068.64

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Solution

The fourth proportional to 730,128, 1,008,038.80 and 501,068.64 is: 691,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,128 : 1,008,038.80 = 501,068.64 : x
  2. Step 2: Convert to fraction form
    730,128/1,008,038.80 = 501,068.64/x
  3. Step 3: Cross multiply
    730,128x = 1,008,038.80 × 501,068.64
  4. Step 4: Simplify right side
    730,128x = 505,096,630,583.23
  5. Step 5: Solve for x
    x = 505,096,630,583.23/730,128
  6. Step 6: Final answer
    x = 691,791.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.