Home / 1,016,902.76-1,403,983.18-630,128.60

Finding the Fourth Proportional to 1,016,902.76, 1,403,983.18 and 630,128.60

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Solution

The fourth proportional to 1,016,902.76, 1,403,983.18 and 630,128.60 is: 869,984.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016,902.76 : 1,403,983.18 = 630,128.60 : x
  2. Step 2: Convert to fraction form
    1,016,902.76/1,403,983.18 = 630,128.60/x
  3. Step 3: Cross multiply
    1,016,902.76x = 1,403,983.18 × 630,128.60
  4. Step 4: Simplify right side
    1,016,902.76x = 884,689,955,636.95
  5. Step 5: Solve for x
    x = 884,689,955,636.95/1,016,902.76
  6. Step 6: Final answer
    x = 869,984.81

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Double scale
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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.