Home / 1,047,492.81-1,445,499.40-640,276.47

Finding the Fourth Proportional to 1,047,492.81, 1,445,499.40 and 640,276.47

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Solution

The fourth proportional to 1,047,492.81, 1,445,499.40 and 640,276.47 is: 883,556.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,492.81 : 1,445,499.40 = 640,276.47 : x
  2. Step 2: Convert to fraction form
    1,047,492.81/1,445,499.40 = 640,276.47/x
  3. Step 3: Cross multiply
    1,047,492.81x = 1,445,499.40 × 640,276.47
  4. Step 4: Simplify right side
    1,047,492.81x = 925,519,253,219.12
  5. Step 5: Solve for x
    x = 925,519,253,219.12/1,047,492.81
  6. Step 6: Final answer
    x = 883,556.66

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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.