Home / 686,490,342.40-1,029,735,513.60-318,024,582.40

Finding the Fourth Proportional to 686,490,342.40, 1,029,735,513.60 and 318,024,582.40

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Solution

The fourth proportional to 686,490,342.40, 1,029,735,513.60 and 318,024,582.40 is: 477,036,873.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,490,342.40 : 1,029,735,513.60 = 318,024,582.40 : x
  2. Step 2: Convert to fraction form
    686,490,342.40/1,029,735,513.60 = 318,024,582.40/x
  3. Step 3: Cross multiply
    686,490,342.40x = 1,029,735,513.60 × 318,024,582.40
  4. Step 4: Simplify right side
    686,490,342.40x = 327,481,206,695,089,472
  5. Step 5: Solve for x
    x = 327,481,206,695,089,472/686,490,342.40
  6. Step 6: Final answer
    x = 477,036,873.60

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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.