Home / 686,751.60-1,030,127.40-287,259.60

Finding the Fourth Proportional to 686,751.60, 1,030,127.40 and 287,259.60

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Solution

The fourth proportional to 686,751.60, 1,030,127.40 and 287,259.60 is: 430,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,751.60 : 1,030,127.40 = 287,259.60 : x
  2. Step 2: Convert to fraction form
    686,751.60/1,030,127.40 = 287,259.60/x
  3. Step 3: Cross multiply
    686,751.60x = 1,030,127.40 × 287,259.60
  4. Step 4: Simplify right side
    686,751.60x = 295,913,984,873.04
  5. Step 5: Solve for x
    x = 295,913,984,873.04/686,751.60
  6. Step 6: Final answer
    x = 430,889.40

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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.