Home / 686,809.60-1,030,214.40-660,565.60

Finding the Fourth Proportional to 686,809.60, 1,030,214.40 and 660,565.60

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Solution

The fourth proportional to 686,809.60, 1,030,214.40 and 660,565.60 is: 990,848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,809.60 : 1,030,214.40 = 660,565.60 : x
  2. Step 2: Convert to fraction form
    686,809.60/1,030,214.40 = 660,565.60/x
  3. Step 3: Cross multiply
    686,809.60x = 1,030,214.40 × 660,565.60
  4. Step 4: Simplify right side
    686,809.60x = 680,524,193,264.64
  5. Step 5: Solve for x
    x = 680,524,193,264.64/686,809.60
  6. Step 6: Final answer
    x = 990,848.40

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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.